Announcements: Please leave your binder at end of class
Objectives:
Warm-up:
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Friday, June 3, 2011
Mon., Jun. 6, 2011
Announcements: 3 More classes
Senior final next class
Hand in Notebooks next class
Objectives: Use thermochemical concepts to
determine the identity of an unknown metal
Warm-up: A shiny grey colored ring with a mass of
29.31 grams loses 1207.8 Joules of heat energy as it
cools from 342 degrees Celcius to 25 degrees celcius.
Is the ring made of silver or platinum?
Calorimeters & Conservation of Mass/Energy
Senior final next class
Hand in Notebooks next class
Objectives: Use thermochemical concepts to
determine the identity of an unknown metal
Warm-up: A shiny grey colored ring with a mass of
29.31 grams loses 1207.8 Joules of heat energy as it
cools from 342 degrees Celcius to 25 degrees celcius.
Is the ring made of silver or platinum?
Calorimeters & Conservation of Mass/Energy
Fri., Jun. 3, 2011
Announcements: Hand in your rocket project!
Notebooks will be collected on Wednesday
Objectives: Calculate thre pressure inside a
popcorn kernel when the popcorn pops
Wednesday's addendum
Warm-up: Drop a hot piece of iron into 200
mL of cold water(12 degrees Celcius), and
water will heat up. If the water heats up to
23 degrees, how much heat energy was
transferred to the water?
Lab: Investigate the conditions under which popcorn
pops
Flash points of various oils
Complete data and calculations
Notebooks will be collected on Wednesday
Objectives: Calculate thre pressure inside a
popcorn kernel when the popcorn pops
Wednesday's addendum
Warm-up: Drop a hot piece of iron into 200
mL of cold water(12 degrees Celcius), and
water will heat up. If the water heats up to
23 degrees, how much heat energy was
transferred to the water?
Lab: Investigate the conditions under which popcorn
pops
Flash points of various oils
Complete data and calculations
Tuesday, May 31, 2011
Thurs., Jun. 2, 2011
Announcements: Hand in your rocket project!
Objectives: Calculate amount of water in
popcorn kernels
Warm-up: Drop a hot piece of iron into 200
mL of cold water(12 degrees Celcius), and
water will heat up. If the water heats up to
23 degrees, how much heat energy was
transferred to the water? Don't Forget...
Lab: Investigate the conditions under which popcorn
pops
Flash points of various oils
Complete data and calculations
Objectives: Calculate amount of water in
popcorn kernels
Warm-up: Drop a hot piece of iron into 200
mL of cold water(12 degrees Celcius), and
water will heat up. If the water heats up to
23 degrees, how much heat energy was
transferred to the water? Don't Forget...
Lab: Investigate the conditions under which popcorn
pops
Flash points of various oils
Complete data and calculations
Tuesday, May 24, 2011
Wed., Jun. 1, 2011
Announcements: Rocket project due Friday
Objectives:Thermochemistry basics
Warm-up: Mr. Shaffer's sunny personality has
caused the lab to heat up to 30 degrees Celcius
and high pressure dominates the whole region
with an atmospheric pressure of 104.0 kPa.
Today we are generating SO2 gas by the action
of hydrochloric acid on sodium bisulfite.
Additional products are sodium chloride
& water. What volume of SO2 gas can be
generated from 4.88 grams of sodium
bisulfite?
Review of launch process & rockets
Vote for the wall of fame
Exothermic & endothermic processes
Heating & cooling curves...
Some Specific Heats
Calorimetry
Bomb Calorimeter
Objectives:Thermochemistry basics
Warm-up: Mr. Shaffer's sunny personality has
caused the lab to heat up to 30 degrees Celcius
and high pressure dominates the whole region
with an atmospheric pressure of 104.0 kPa.
Today we are generating SO2 gas by the action
of hydrochloric acid on sodium bisulfite.
Additional products are sodium chloride
& water. What volume of SO2 gas can be
generated from 4.88 grams of sodium
bisulfite?
Review of launch process & rockets
Vote for the wall of fame
Exothermic & endothermic processes
Heating & cooling curves...
- Melting point
- freezing point
- vaporization point
- condensation point
Some Specific Heats
Calorimetry
Bomb Calorimeter
Tues., May 31, 2011
Announcements: Rocket project due Thurs.
Objectives:Thermochemistry basics
Warm-up: Mr. Shaffer's sunny personality has
caused the lab to heat up to 30 degrees Celcius
and high pressure dominates the whole region
with an atmospheric pressure of 104.0 kPa.
Today we are generating SO2 gas by the action
of hydrochloric acid on sodium bisulfite.
Additional products are sodium chloride
& water. What volume of SO2 gas can be
generated from 4.88 grams of sodium
bisulfite?
Review of launch process & rockets
Vote for the wall of fame
Exothermic & endothermic processes
Heating & cooling curves...
Some Specific Heats
Calorimetry
Bomb Calorimeter
Objectives:Thermochemistry basics
Warm-up: Mr. Shaffer's sunny personality has
caused the lab to heat up to 30 degrees Celcius
and high pressure dominates the whole region
with an atmospheric pressure of 104.0 kPa.
Today we are generating SO2 gas by the action
of hydrochloric acid on sodium bisulfite.
Additional products are sodium chloride
& water. What volume of SO2 gas can be
generated from 4.88 grams of sodium
bisulfite?
Review of launch process & rockets
Vote for the wall of fame
Exothermic & endothermic processes
Heating & cooling curves...
- Melting point
- freezing point
- vaporization point
- condensation point
Some Specific Heats
Calorimetry
Bomb Calorimeter
Thurs., May 26, 2011
Announcements: Checking rocket fueling procedure
Final due dates for project Tues., May 31
Homework: Rough draft of all pieces
Objectives: Generate gases & launch rockets
No Warm-up
Fuel your rocket
Launch!
Final due dates for project Tues., May 31
Homework: Rough draft of all pieces
Objectives: Generate gases & launch rockets
No Warm-up
Fuel your rocket
Launch!
Thursday, May 19, 2011
Wed., May 25, 2011
Announcements: Checking rocket fueling procedure
Final due dates for project Tues., Jun. 1
Homework: Rough draft of all pieces
Objectives: Generate gases & launch rockets
No Warm-up
Get your procedure checked and approved
Fuel your rocket
Launch!
Final due dates for project Tues., Jun. 1
Homework: Rough draft of all pieces
Objectives: Generate gases & launch rockets
No Warm-up
Get your procedure checked and approved
Fuel your rocket
Launch!
Tues., May 24, 2011
Announcements: Checking "History of Rocketry"
We will be fueling and launching on Thurs.
You must be prepared.
Homework: Create your procedure in some way
that will impresses me and do your drawing of
the fueling process
Objectives: Stoichiometry for rocket fueling
Stoichiometric calculations for rocket fueling
Warm-up: You calculate that you need 640 mL
of H2 gas for your rocket. Since the lab is at 22
degrees Celcius and the atmospheric pressure
today is 1.2 atm, how many moles of H2 will
you need in your rocket?
Show me your "History of Rocketry"
Complete your calcuations for the amounts of Mg
& MnO2 needed to produce your H2 & O2
Dry run of fueling process
We will be fueling and launching on Thurs.
You must be prepared.
Homework: Create your procedure in some way
that will impresses me and do your drawing of
the fueling process
Objectives: Stoichiometry for rocket fueling
Stoichiometric calculations for rocket fueling
Warm-up: You calculate that you need 640 mL
of H2 gas for your rocket. Since the lab is at 22
degrees Celcius and the atmospheric pressure
today is 1.2 atm, how many moles of H2 will
you need in your rocket?
Show me your "History of Rocketry"
Complete your calcuations for the amounts of Mg
& MnO2 needed to produce your H2 & O2
Dry run of fueling process
Tuesday, May 17, 2011
Mon., May 23, 2011
Announcements: Today is an Even day
Checking "History of Rocketry"
We will be fueling and launching on Wed.
You must be prepared.
Homework: Create your procedure in some way
that will impresses me and do your drawing of
the fueling process
Objectives: Stoichiometry for rocket fueling
Stoichiometric calculations for rocket fueling
Warm-up: You calculate that you need 640 mL
of H2 gas for your rocket. Since the lab is at 22
degrees Celcius and the atmospheric pressure
today is 1.2 atm, how many moles of H2 will
you need in your rocket?
Show me your "History of Rocketry"
Complete your calcuations for the amounts of Mg
& MnO2 needed to produce your H2 & O2
Dry run of fueling process
Checking "History of Rocketry"
We will be fueling and launching on Wed.
You must be prepared.
Homework: Create your procedure in some way
that will impresses me and do your drawing of
the fueling process
Objectives: Stoichiometry for rocket fueling
Stoichiometric calculations for rocket fueling
Warm-up: You calculate that you need 640 mL
of H2 gas for your rocket. Since the lab is at 22
degrees Celcius and the atmospheric pressure
today is 1.2 atm, how many moles of H2 will
you need in your rocket?
Show me your "History of Rocketry"
Complete your calcuations for the amounts of Mg
& MnO2 needed to produce your H2 & O2
Dry run of fueling process
Fri., May 20, 2011
Announcements: Short essay on history of rocketry
is due on Monday!
Objectives: Gain comfort and practice working
with gas laws
Begin stoichiometric calculation for rocket
fueling
Warm-ups: On a bright summer day under standard
atmospheric pressure, Tommy is buying a helium
balloon for Timmy's birthday party. When the clerk
is filling the balloon, she stops part way through to
make sure it is not going to explode and checks the
pressure. The pressure is 77 KPa and the temperature
at the store is 24oC. She finishes inflating the balloon
to 0.75L full. When she stops, the ballon pressure is
155 KPa. When Tommy takes the balloon outside, it
explodes. What was the temperature outdoors? This
type of helium balloon is fully inflated at 1.2 L.
Balance the Rocket Equations
What masses of Mg & MnO2 must you start with to
collect the right amount of H2 and O2 for your rocket?
Don't forget that in the room, here, it is not STP
Today's pressure & temperature
is due on Monday!
Objectives: Gain comfort and practice working
with gas laws
Begin stoichiometric calculation for rocket
fueling
Warm-ups: On a bright summer day under standard
atmospheric pressure, Tommy is buying a helium
balloon for Timmy's birthday party. When the clerk
is filling the balloon, she stops part way through to
make sure it is not going to explode and checks the
pressure. The pressure is 77 KPa and the temperature
at the store is 24oC. She finishes inflating the balloon
to 0.75L full. When she stops, the ballon pressure is
155 KPa. When Tommy takes the balloon outside, it
explodes. What was the temperature outdoors? This
type of helium balloon is fully inflated at 1.2 L.
Balance the Rocket Equations
What masses of Mg & MnO2 must you start with to
collect the right amount of H2 and O2 for your rocket?
Don't forget that in the room, here, it is not STP
Today's pressure & temperature
Wed., May 18, 2011
Announcements: Rocket fueling calculations
begin today!
Objectives: Gain comfort and practice working
with gas laws
Begin stoichiometric calculation for rocket
fueling
Warm-ups: A Weather balloon which has a
maximum volume of 4000 L is filled with
500 l of H2 at 720 torr and released. At
what height will the balloon burst if the
pressure decreases by 2.5 mm Hg for
every 1000 ft of elevation?
STP & Universal gas constant
Working with gas laws (problem set)
Standard molar volume
The Rocket fueling problem
Homework: What volume of Hydrogen and oxygen
will you need to generate for your rocket...assume a
pressure of 1 atm and 22 degrees Celcius.
begin today!
Objectives: Gain comfort and practice working
with gas laws
Begin stoichiometric calculation for rocket
fueling
Warm-ups: A Weather balloon which has a
maximum volume of 4000 L is filled with
500 l of H2 at 720 torr and released. At
what height will the balloon burst if the
pressure decreases by 2.5 mm Hg for
every 1000 ft of elevation?
STP & Universal gas constant
Working with gas laws (problem set)
Standard molar volume
The Rocket fueling problem
Homework: What volume of Hydrogen and oxygen
will you need to generate for your rocket...assume a
pressure of 1 atm and 22 degrees Celcius.
Tues., May 17, 2011
Announcements: Rocket fueling calculations
begin today!
Objectives: Gain comfort and practice working
with gas laws
Begin stoichiometric calculation for rocket
fueling
Warm-ups: A Weather balloon which has a
maximum volume of 4000 L is filled with
500 l of H2 at 720 torr and released. At
what height will the balloon burst if the
pressure decreases by 2.5 mm Hg for
every 1000 ft of elevation?
STP & Universal gas constant
Working with gas laws (problem set)
Standard molar volume
The Rocket fueling problem
Homework: What volume of Hydrogen and oxygen
will you need to generate for your rocket...assume a
pressure of 1 atm and 22 degrees Celcius.
begin today!
Objectives: Gain comfort and practice working
with gas laws
Begin stoichiometric calculation for rocket
fueling
Warm-ups: A Weather balloon which has a
maximum volume of 4000 L is filled with
500 l of H2 at 720 torr and released. At
what height will the balloon burst if the
pressure decreases by 2.5 mm Hg for
every 1000 ft of elevation?
STP & Universal gas constant
Working with gas laws (problem set)
Standard molar volume
The Rocket fueling problem
Homework: What volume of Hydrogen and oxygen
will you need to generate for your rocket...assume a
pressure of 1 atm and 22 degrees Celcius.
Thursday, May 12, 2011
Mon., May 16, 2011
Announcements: I would like to collect/evaluate
notebooks this Thurs./Fri.
Objectives: Getting compfortable with gas laws
Warm-up: Determine the volume occupied by 0.582 moles
of a gas at 15°C if the pressure is 622 mm Hg
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
notebooks this Thurs./Fri.
Objectives: Getting compfortable with gas laws
Warm-up: Determine the volume occupied by 0.582 moles
of a gas at 15°C if the pressure is 622 mm Hg
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Fri., May 13, 2011
Announcments:
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-up: 29.86 grams of Lead (II) iodide is produced when KI is combined with lead (II) nitrate. What masses of KI & lead (II) nitrate are needed so that each are completely consumed?
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-up: 29.86 grams of Lead (II) iodide is produced when KI is combined with lead (II) nitrate. What masses of KI & lead (II) nitrate are needed so that each are completely consumed?
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Thurs., May 12, 2011
Announcments:
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-up: 29.86 grams of Lead (II) iodide is produced when
KI is combined with lead (II) nitrate. What masses of KI &
lead (II) nitrate are needed so that each are completely
consumed?
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-up: 29.86 grams of Lead (II) iodide is produced when
KI is combined with lead (II) nitrate. What masses of KI &
lead (II) nitrate are needed so that each are completely
consumed?
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Thursday, May 5, 2011
Wed., May 11, 2011
Announcments: I'm grading rockets today
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-ups: Finish Quizlet
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-ups: Finish Quizlet
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Tues., May 10, 2011
Announcments: I'm grading rockets tomorrow (Wed.)
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-ups: Finish Quizlet
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Objectives: Determine how the pressure, temperature &
volume of a gas will change when one or more factors are
changed
Warm-ups: Finish Quizlet
Temperature scales...
Tc = (5/9)*(Tf-32) solve for Tf
But for gas laws...always stick with "Kelvins"
pressure units & equivalents
Thinking about graphs and relationships
Lab Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Working with gas laws (problem set)
Mon., May 9, 2011
Announcements: Rockets now!
Objectives: Check knowledge of stoichiometric concepts
Quizlet #10
Temperature scales...
pressure units & equivalents
Finish graphs/analysis
Objectives: Check knowledge of stoichiometric concepts
Quizlet #10
Temperature scales...
pressure units & equivalents
Finish graphs/analysis
Tuesday, May 3, 2011
Fri., May 6, 2011
Objectives: Describe how the volume of a gas
changes as a result of changes in temperature
or pressure of the container.
Announcements: Get your rocket evaluated!
Construction & pizzazz
Quizlet Monday - Stoichiometry, Limiting Reagent
& % Yield
Warm-ups:
Finish Gas Laws labs
Graph data (P,V = Boyle's Law)
(P,T = Gay-Lussac's Law)
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
pressure units & equivalents
Working with gas laws (problem set)
changes as a result of changes in temperature
or pressure of the container.
Announcements: Get your rocket evaluated!
Construction & pizzazz
Quizlet Monday - Stoichiometry, Limiting Reagent
& % Yield
Warm-ups:
Finish Gas Laws labs
Graph data (P,V = Boyle's Law)
(P,T = Gay-Lussac's Law)
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
pressure units & equivalents
Working with gas laws (problem set)
Thurs., May 5, 2011
Objectives: Describe how the volume of a gas
changes as a result of changes in temperature
or pressure of the container.
Announcements: Get your rocket evaluated!
Construction & pizzazz
Warm-ups:
Gas Laws labs
Graph data
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
pressure units & equivalents
Working with gas laws (problem set)
changes as a result of changes in temperature
or pressure of the container.
Announcements: Get your rocket evaluated!
Construction & pizzazz
Warm-ups:
Gas Laws labs
Graph data
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
pressure units & equivalents
Working with gas laws (problem set)
Monday, May 2, 2011
Wed., May 4, 2011
Announcements:Rockets will get graded
(construction & pizzazz) on Thurs. (next class)
Objectives: Describe how the volume of a gas
changes as a result of changes in temperature
or pressure of the container.
Limiting reactant and percent yield:
90.0 g of FeCl3 reacts with 52.0 g of H2S. What is
the limiting reactant? What is the mass of HCl
produced? What mass of excess reactant remains
after the reaction? If only 55 grams of HCl is
actually produced, what was the percent yield
for this reaction?
Gas Laws labs
Graph data
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
(construction & pizzazz) on Thurs. (next class)
Objectives: Describe how the volume of a gas
changes as a result of changes in temperature
or pressure of the container.
Limiting reactant and percent yield:
90.0 g of FeCl3 reacts with 52.0 g of H2S. What is
the limiting reactant? What is the mass of HCl
produced? What mass of excess reactant remains
after the reaction? If only 55 grams of HCl is
actually produced, what was the percent yield
for this reaction?
Gas Laws labs
Graph data
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Wednesday, April 27, 2011
Tues., May 3, 2011
Announcements:Rockets will get graded
(construction & pizzazz) on Thurs. (next class)
Objectives: Describe how the volume of a gas
changes as a result of changes in temperature
or pressure of the container.
Limiting reactant and percent yield:
90.0 g of FeCl3 reacts with 52.0 g of H2S. What is
the limiting reactant? What is the mass of HCl
produced? What mass of excess reactant remains
after the reaction? If only 55 grams of HCl is
actually produced, what was the percent yield
for this reaction?
Gas Laws labs
Graph data
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
(construction & pizzazz) on Thurs. (next class)
Objectives: Describe how the volume of a gas
changes as a result of changes in temperature
or pressure of the container.
Limiting reactant and percent yield:
90.0 g of FeCl3 reacts with 52.0 g of H2S. What is
the limiting reactant? What is the mass of HCl
produced? What mass of excess reactant remains
after the reaction? If only 55 grams of HCl is
actually produced, what was the percent yield
for this reaction?
Gas Laws labs
Graph data
Discussion, STP
Combined gas law
Ideal gas law
Universal gas constant
Mon., May 2, 2011
Objectives: Determine which reactant is all
used up and which is in excess in a chem reaction.
Announcements: I would like to get notebooks this week.
Rockets will get graded (construction & pizzazz)
on Thurs. (this week, 5/5)
When magnesium combusts in the air, some little bit of the magnesium
reacts with nitrogen, rather than oxygen. Write the balanced equation
for the reaction that produces magnesium nitride. Now suppose 1.10 g
of nitrogen gas actually reacts with some of the magnesium, how many
grams of magnesium nitride is created?
Limiting reactant and percent yield:
90.0 g of FeCl3 reacts with 52.0 g of H2S. What is the
limiting reactant? What is the mass of HCl produced?
What mass of excess reactant remains after the reaction?
If only 55 grams of HCl is actually produced, what was
the percent yield for this reaction?
used up and which is in excess in a chem reaction.
Announcements: I would like to get notebooks this week.
Rockets will get graded (construction & pizzazz)
on Thurs. (this week, 5/5)
When magnesium combusts in the air, some little bit of the magnesium
reacts with nitrogen, rather than oxygen. Write the balanced equation
for the reaction that produces magnesium nitride. Now suppose 1.10 g
of nitrogen gas actually reacts with some of the magnesium, how many
grams of magnesium nitride is created?
Limiting reactant and percent yield:
90.0 g of FeCl3 reacts with 52.0 g of H2S. What is the
limiting reactant? What is the mass of HCl produced?
What mass of excess reactant remains after the reaction?
If only 55 grams of HCl is actually produced, what was
the percent yield for this reaction?
Thursday, April 21, 2011
Thurs., Apr. 28, 2011
Objectives: Ba able to determine which reactant
is limiting the reaction and which will be
left over ("excess")
Announcements: All last work is due today if you
want it to be counted for the 6 wks.
Get rockets done this weekend!
Warm-up: 72 grams of magnesium nitrate is
produced from the action of a sodium nitrate
solution on crystalline magnesium hydroxide.
What mass of sodium nitrate had to be used?
How many molecules of sodium nitrate is that?
Steps in the process...
40g Al(NO3)3 + 24g Mg
is limiting the reaction and which will be
left over ("excess")
Announcements: All last work is due today if you
want it to be counted for the 6 wks.
Get rockets done this weekend!
Warm-up: 72 grams of magnesium nitrate is
produced from the action of a sodium nitrate
solution on crystalline magnesium hydroxide.
What mass of sodium nitrate had to be used?
How many molecules of sodium nitrate is that?
Steps in the process...
- Write correct formulae
- Balance the Equation
- Molar masses of all substances involved
- Given grams --> moles (use mm)
- moles given --> moles wanted (use ideal ratio)
- moles --> grams
and/or - moles --> molecules/atoms/ions/...
40g Al(NO3)3 + 24g Mg
Wednesday, April 20, 2011
Wed., Apr. 27, 2011
Objectives: Ba able to determine which reactant
is limiting the reaction and which will be
left over ("excess")
Announcements: All last work is due today if you
want it to be counted for the 6 wks.
Get rockets done this weekend!
Warm-up: 72 grams of magnesium nitrate is
produced from the action of a sodium nitrate
solution on crystalline magnesium hydroxide.
What mass of sodium nitrate had to be used?
How many molecules of sodium nitrate is that?
Steps in the process...
40g Al(NO3)3 + 24g Mg
is limiting the reaction and which will be
left over ("excess")
Announcements: All last work is due today if you
want it to be counted for the 6 wks.
Get rockets done this weekend!
Warm-up: 72 grams of magnesium nitrate is
produced from the action of a sodium nitrate
solution on crystalline magnesium hydroxide.
What mass of sodium nitrate had to be used?
How many molecules of sodium nitrate is that?
Steps in the process...
- Write correct formulae
- Balance the Equation
- Molar masses of all substances involved
- Given grams --> moles (use mm)
- moles given --> moles wanted (use ideal ratio)
- moles --> grams
and/or - moles --> molecules/atoms/ions/...
40g Al(NO3)3 + 24g Mg
Tues., Apr. 26, 2011
Objectives: Determine which of 2 reactants will
limit the amounts of products you can make
Announcements: All work must be turned in Wed. if
you want it counted for the 6 wks.
Warm-ups: A “patina” of solid copper(II) oxide is
formed as copper metal corrodes slowly in air.
Quizlet #9 - simple reaction stoichiometry
Stoichiometry Practice Problems
Limiting & excess reactants
limit the amounts of products you can make
Announcements: All work must be turned in Wed. if
you want it counted for the 6 wks.
Warm-ups: A “patina” of solid copper(II) oxide is
formed as copper metal corrodes slowly in air.
Quizlet #9 - simple reaction stoichiometry
Stoichiometry Practice Problems
Limiting & excess reactants
Mon., Apr. 25, 2011
Today is an Even Day! - No school Friday
Objectives: Determine which of 2 reactants will
limit the amounts of products you can make
Announcements: All work must be turned in Wed. if
you want it counted for the 6 wks.
Warm-ups: A “patina” of solid copper(II) oxide is
formed as copper metal corrodes slowly in air.
Quizlet #9 - simple reaction stoichiometry
Stoichiometry Practice Problems
Limiting & excess reactants
Objectives: Determine which of 2 reactants will
limit the amounts of products you can make
Announcements: All work must be turned in Wed. if
you want it counted for the 6 wks.
Warm-ups: A “patina” of solid copper(II) oxide is
formed as copper metal corrodes slowly in air.
Quizlet #9 - simple reaction stoichiometry
Stoichiometry Practice Problems
Limiting & excess reactants
Fri., Apr. 22, 2011
Monday is an EVEN DAY...This class meetsObjectives: Students will be able to predict the
exact amounts of reactants needed to so that
there is no excess (or waste)
Announcements: Quizlet Monday
Warm-ups: Write the complete and balanced chemical
reaction indicated by the following sentence...
Barium sulfate precipitates as a result of the action of
crystalline potassium sulfate on a barium nitrate solution
Reaction stoichiometry
Sample problems
Thurs., Apr. 21, 2011
Objectives: Students will be able to predict the
exact amounts of reactants needed to so that
there is no excess (or waste)
Announcements: Quizlet Monday (simple stoichiometry)
Warm-ups: Write the complete and balanced chemical
reaction indicated by the following sentence...
Barium sulfate precipitates as a result of the action of
crystalline potassium sulfate on a barium nitrate solution
Reaction stoichiometry
Sample problems
exact amounts of reactants needed to so that
there is no excess (or waste)
Announcements: Quizlet Monday (simple stoichiometry)
Warm-ups: Write the complete and balanced chemical
reaction indicated by the following sentence...
Barium sulfate precipitates as a result of the action of
crystalline potassium sulfate on a barium nitrate solution
Reaction stoichiometry
Sample problems
Wed., Apr. 20, 2011
Objectives: Summative Evaluationfor Chapters
10 & 11
Announcments: Rockets need to be ready by May 4
No warm-ups
Test...
Answers to multiple choice
10 & 11
Announcments: Rockets need to be ready by May 4
No warm-ups
Test...
Answers to multiple choice
Tues., Apr. 19, 2011
Objectives: Summative Evaluationfor Chapters
10 & 11
Announcments: Rockets need to be ready by May 3
No warm-ups
Test...
Answers to multiple choice
10 & 11
Announcments: Rockets need to be ready by May 3
No warm-ups
Test...
Answers to multiple choice
Tuesday, April 12, 2011
Mon., Apr. 18, 2011
Objectives: Prepare for the test
Be able to determine how much reactants
are needed to react perfectly
Announcements: Test next class - Chapts.
10 & 11 (Reaction types, symbols,
balanced equations, moles)
Warm-ups: How many moles of molecules
are in 4.8 x 10^25 molecules of CaO?
What mass would that be?
What is the percent composition of
Ca & O in CaO?
Decoding
Mass-->moles-->molecules--> moles-->mass
More stoichiometry
Be able to determine how much reactants
are needed to react perfectly
Announcements: Test next class - Chapts.
10 & 11 (Reaction types, symbols,
balanced equations, moles)
Warm-ups: How many moles of molecules
are in 4.8 x 10^25 molecules of CaO?
What mass would that be?
What is the percent composition of
Ca & O in CaO?
Decoding
Mass-->moles-->molecules--> moles-->mass
More stoichiometry
Thurs., Apr. 14, 2011
Announcements: Test on Wed. -
Chapts. 10 & 11 (Reaction types, symbols,
balanced equations, moles)
Objectives: Calculate theoretical yeild
in a given reaction & see if you can actually
obtain that in the real reaction
Warm-ups: Challenger Balancing Equations
Decoding Examples
% Composition (Nicotine)
Applying the mole concept to balanced equations
Chapts. 10 & 11 (Reaction types, symbols,
balanced equations, moles)
Objectives: Calculate theoretical yeild
in a given reaction & see if you can actually
obtain that in the real reaction
Warm-ups: Challenger Balancing Equations
Decoding Examples
% Composition (Nicotine)
Applying the mole concept to balanced equations
Friday, April 8, 2011
Wed., Apr. 13, 2011
Announcements: Test on Wed. -
Chapts. 10 & 11 (Reaction types, symbols,
balanced equations, moles)
Objectives: Calculate theoretical yeild
in a given reaction & see if you can actually
obtain that in the real reaction
Warm-ups: Challenger Balancing Equations
Decoding Examples
% Composition (Nicotine)
Mass-->Moles-->Mass-->Moles
Applying the mole concept to balanced equations
Chapts. 10 & 11 (Reaction types, symbols,
balanced equations, moles)
Objectives: Calculate theoretical yeild
in a given reaction & see if you can actually
obtain that in the real reaction
Warm-ups: Challenger Balancing Equations
Decoding Examples
% Composition (Nicotine)
Mass-->Moles-->Mass-->Moles
Applying the mole concept to balanced equations
Tues., Apr. 12, 2011
Announcements: No school Friday - Furlough
Objectives: Determine how much of a substance
will result from a chemical reaction
No warm-ups today
Quizlet #8 - Balanced equations, decoding and basic moles
Last of the Mole examples
More decoding examples
Percent composition
Applying the mole concept to a balanced equation
Stoichiometry
Objectives: Determine how much of a substance
will result from a chemical reaction
No warm-ups today
Quizlet #8 - Balanced equations, decoding and basic moles
Last of the Mole examples
More decoding examples
Percent composition
Applying the mole concept to a balanced equation
Stoichiometry
Mon., Apr. 11, 2011
Announcements: Today is an even day
No school Friday - Furlough
Objectives: Determine how much of a substance
will result from a chemical reaction
No warm-ups today
Quizlet #8 - Balanced equations, decoding and basic moles
Last of the Mole examples
More decoding examples
Percent composition
Applying the mole concept to a balanced equation
Stoichiometry
No school Friday - Furlough
Objectives: Determine how much of a substance
will result from a chemical reaction
No warm-ups today
Quizlet #8 - Balanced equations, decoding and basic moles
Last of the Mole examples
More decoding examples
Percent composition
Applying the mole concept to a balanced equation
Stoichiometry
Tuesday, April 5, 2011
Fri., Apr. 8, 2011
Objectives: Be able to equate moles of a substance
with mass and number of particles
Announcements: Do you have your scientific calculator?
Warm-ups: Balance these...
Some decoding examples
Avogadro's number & history of the "mole"
More mole examples
Relationship between moles and mass of a substance
Relationship between moles and number of particles
Mole "Y" diagram
with mass and number of particles
Announcements: Do you have your scientific calculator?
Warm-ups: Balance these...
Some decoding examples
Avogadro's number & history of the "mole"
More mole examples
Relationship between moles and mass of a substance
Relationship between moles and number of particles
Mole "Y" diagram
Monday, April 4, 2011
Thurs., Apr. 7, 2011
Objectives: Be able to equate moles of a substance with mass and number of particles Announcements: Do you have your scientific calculator? Warm-ups: Balance these... Some decoding examples Avogadro's number & history of the "mole" More mole examples Relationship between moles and mass of a substance Relationship between moles and number of particles Mole "Y" diagram
Some decoding examples Avogadro's number & history of the "mole" More mole examples Relationship between moles and mass of a substance Relationship between moles and number of particles Mole "Y" diagram
Wednesday, March 30, 2011
Wed., Apr.6, 2011
Objectives:Be able to predict whether a reaction will take
place on it's own
Understand the underlying meaning of a balanced equation
and be able to convert back and forth from grams to moles
to molecules
Announcements: BRING YOUR SCIENTIFIC CALCULATOR!
Warm-ups: Balance the following chemical equations
What types of reactions are these?
Decoding skills
Activity series of the elements
The real meaning of a balanced chemical reaction
The Mole (but how to really understand) (history)
Avgadro's Number
relationships & converting
place on it's own
Understand the underlying meaning of a balanced equation
and be able to convert back and forth from grams to moles
to molecules
Announcements: BRING YOUR SCIENTIFIC CALCULATOR!
Warm-ups: Balance the following chemical equations
What types of reactions are these?
Decoding skills
Activity series of the elements
The real meaning of a balanced chemical reaction
The Mole (but how to really understand) (history)
Avgadro's Number
relationships & converting
Tues., Apr. 5, 2011
Objectives:Be able to predict whether a reaction will take
place on it's own
Understand the underlying meaning of a balanced equation
and be able to convert back and forth from grams to moles
to molecules
Announcements: BRING YOUR SCIENTIFIC CALCULATOR!
Warm-ups: Balance the following chemical equations
What types of reactions are these?
Decoding skills
Activity series of the elements
The real meaning of a balanced chemical reaction
The Mole (but how to really understand) (history)
relationships & converting
place on it's own
Understand the underlying meaning of a balanced equation
and be able to convert back and forth from grams to moles
to molecules
Announcements: BRING YOUR SCIENTIFIC CALCULATOR!
Warm-ups: Balance the following chemical equations
What types of reactions are these?
Decoding skills
Activity series of the elements
The real meaning of a balanced chemical reaction
The Mole (but how to really understand) (history)
relationships & converting
Wednesday, March 16, 2011
Thurs., Mar. 31, 2011
Objectives: Be able to predict the results of chemical reactions
and write the balanced equations for those reactions.
Announcements: Quizlet Monday on chemical symbols
Drawing chemicals, balancing equations & types of
chemical reactions
Warm-ups: Name the following chemical structures and
count the number of each element...
FeCl3..............NH4NO3.............Al2(Cr2O7)3...........
Cu(C2H3O2)2...............Cr(PO4)2
Review types of reactions
Counting atoms & Balancing equations
and write the balanced equations for those reactions.
Announcements: Quizlet Monday on chemical symbols
Drawing chemicals, balancing equations & types of
chemical reactions
Warm-ups: Name the following chemical structures and
count the number of each element...
FeCl3..............NH4NO3.............Al2(Cr2O7)3...........
Cu(C2H3O2)2...............Cr(PO4)2
Review types of reactions
Counting atoms & Balancing equations
Wed., Mar. 30, 2011
Objectives: balance simple chemical equations
Announcements:
Warm-ups: Describe what the following
symbols indicate in a chemical equation
... (g)..............elec..............(aq)............
--->..... H2SO4 (over the arrow)...............(s)
Finish whatever part of the lab you need
Making sense from the lab...
Types of chemical equations (Video Intro)
Announcements:
Warm-ups: Describe what the following
symbols indicate in a chemical equation
... (g)..............elec..............(aq)............
--->..... H2SO4 (over the arrow)...............(s)
Finish whatever part of the lab you need
Making sense from the lab...
Types of chemical equations (Video Intro)
Tues., Mar. 29, 2011
Objectives: balance simple chemical equations
Announcements:
Warm-ups: Describe what the following
symbols indicate in a chemical equation
... (g)..............elec..............(aq)............
--->..... H2SO4 (over the arrow)...............(s)
Finish whatever part of the lab you need
Making sense from the lab...
Types of chemical equations (Video Intro)
Announcements:
Warm-ups: Describe what the following
symbols indicate in a chemical equation
... (g)..............elec..............(aq)............
--->..... H2SO4 (over the arrow)...............(s)
Finish whatever part of the lab you need
Making sense from the lab...
Types of chemical equations (Video Intro)
Mon., Mar. 28, 2011
Welcome Back !
Objectives: Expressing what happens in a chemical reaction
Announcements: Warm-ups start tomorrow
Monday quizlets start next week (4/4)
Lab review - Remember the lab?
Complete all parts of the lab
Special symbols used in chemical equations
Objectives: Expressing what happens in a chemical reaction
Announcements: Warm-ups start tomorrow
Monday quizlets start next week (4/4)
Lab review - Remember the lab?
Complete all parts of the lab
Special symbols used in chemical equations
Fri., Mar. 18, 2011
Objectives: Observe different types of reactions
and analyze the results
Announcements: No homework during break - Enjoy!
Warm-ups: A compound is formed with 2 phosphorus
atoms and 2 sulfur atoms. Which is the central atom
and what is the name of this compound?
Chemical reactions
Chemical reactions lab
Write the reactants & describe what happens
Complete the specific instructions at each station
& record the results
Answer any and all questions at each station
Record the products (as a group, with help)
Enjoy Spring Break!!!
and analyze the results
Announcements: No homework during break - Enjoy!
Warm-ups: A compound is formed with 2 phosphorus
atoms and 2 sulfur atoms. Which is the central atom
and what is the name of this compound?
Chemical reactions
Chemical reactions lab
Write the reactants & describe what happens
Complete the specific instructions at each station
& record the results
Answer any and all questions at each station
Record the products (as a group, with help)
Enjoy Spring Break!!!
Monday, March 14, 2011
Thurs., Mar. 17, 2011
Objectives: Observe different types of reactions
and analyze the results
Announcements: No homework during break - Enjoy!
Warm-ups: A compound is formed with 2 phosphorus
atoms and 2 sulfur atoms. Which is the central atom
and what is the name of this compound?
Chemical reactions
Chemical reactions lab
Write the reactants & describe what happens
Complete the specific instructions at each station
& record the results
Answer any and all questions at each station
Record the products (as a group, with help)
Enjoy Spring Break!!!
and analyze the results
Announcements: No homework during break - Enjoy!
Warm-ups: A compound is formed with 2 phosphorus
atoms and 2 sulfur atoms. Which is the central atom
and what is the name of this compound?
Chemical reactions
Chemical reactions lab
Write the reactants & describe what happens
Complete the specific instructions at each station
& record the results
Answer any and all questions at each station
Record the products (as a group, with help)
Enjoy Spring Break!!!
Wed., Mar. 16, 2011
Objective: Summative evaluation for Chapter 8 -
Covalent compounds, VSEPR & Molecular Geometry
Announcements:
A last bit of review
Test time!
Covalent compounds, VSEPR & Molecular Geometry
Announcements:
A last bit of review
Test time!
Tues., Mar. 15, 2011
Objective: Summative evaluation for Chapter 8 -
Covalent compounds, VSEPR & Molecular Geometry
Announcements:
A last bit of review
Test time!
Covalent compounds, VSEPR & Molecular Geometry
Announcements:
A last bit of review
Test time!
Wednesday, March 9, 2011
Mon., Mar. 14, 2011
Objectives: Predict chemical products that will
result from a chemical reaction
Categorize chemical reactions
Announcements: Check your grades
Quiz tomorrow on covalent compounds,
Lewis structures, VSEPR & Molecular Geometry
Warm-ups: Write the formulae and the name of the
compounds that form when the following ions are
joined in a chemical bond...
Al with OH
NH4 with Cl
Cu(2+) with ClO3
Review for the Test
result from a chemical reaction
Categorize chemical reactions
Announcements: Check your grades
Quiz tomorrow on covalent compounds,
Lewis structures, VSEPR & Molecular Geometry
Warm-ups: Write the formulae and the name of the
compounds that form when the following ions are
joined in a chemical bond...
Al with OH
NH4 with Cl
Cu(2+) with ClO3
Review for the Test
Thurs., Mar. 10, 2011
Objectives: Learn about different molecules
their geometries, and evaluate peers
Continue presentations
their geometries, and evaluate peers
Continue presentations
Wednesday, March 2, 2011
Wed., Mar. 9, 2011
Objectives: Learn about different molecules
their geometries, and evaluate peers
Continue presentations
their geometries, and evaluate peers
Continue presentations
Monday, February 28, 2011
Fri., Mar. 4, 2011
Objectives: Analyze the effects of reacting
a carboxylic acid with an alcohol and determine
what the resulting ester smells like
Announcements: Reports on your molecule will
be Monday. Half credit if you don't present.
Warm-ups: How many valence electrons
does each of the following atoms have?
Calcium..................Bromine...................
Oxygen..................Phosphorus.............
Aluminum.............Iodine......................
Which of the following is likely to have a higher melting point?
CaS..........BrI3............SO2..........ZnSO4.............XeF6
Why?
Esterification Review
Complete your write-up...
a carboxylic acid with an alcohol and determine
what the resulting ester smells like
Announcements: Reports on your molecule will
be Monday. Half credit if you don't present.
Warm-ups: How many valence electrons
does each of the following atoms have?
Calcium..................Bromine...................
Oxygen..................Phosphorus.............
Aluminum.............Iodine......................
Which of the following is likely to have a higher melting point?
CaS..........BrI3............SO2..........ZnSO4.............XeF6
Why?
Esterification Review
Complete your write-up...
- Record the correct smells from posted answers
- Draw the structure of each acid and alcohol you combined
- Draw the structure of each ester you produced
- Name each ester you produced
Thurs., Mar. 3, 2011
Objectives: Analyze the effects of reacting
a carboxylic acid with an alcohol and determine
what the resulting ester smells like
Announcements: Reports on your molecule will
be Tuesday. Half credit if you don't present.
Warm-ups: How many valence electrons
does each of the following atoms have?
Calcium..................Bromine...................
Oxygen..................Phosphorus.............
Aluminum.............Iodine......................
Which of the following is likely to have a higher melting point?
CaS..........BrI3............SO2..........ZnSO4.............XeF6
Why?
Esterification Review
Complete your write-up...
a carboxylic acid with an alcohol and determine
what the resulting ester smells like
Announcements: Reports on your molecule will
be Tuesday. Half credit if you don't present.
Warm-ups: How many valence electrons
does each of the following atoms have?
Calcium..................Bromine...................
Oxygen..................Phosphorus.............
Aluminum.............Iodine......................
Which of the following is likely to have a higher melting point?
CaS..........BrI3............SO2..........ZnSO4.............XeF6
Why?
Esterification Review
Complete your write-up...
- Record the correct smells from posted answers
- Draw the structure of each acid and alcohol you combined
- Draw the structure of each ester you produced
- Name each ester you produced
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