Objectives: Using chemical skills to identify unknown metals
Announcements: Grades
Opening Data: None
Continue lab work with metal samples
Videotape methods, calculations & results
Project Description (just in case)
It came from outerspace
Tuesday, April 30, 2013
Tues., Apr. 30, 2013
Objectives: Identifying materials
Announcements: Grades
Opening Data: None
Begin lab work
Project Description (just in case)
Announcements: Grades
Opening Data: None
Begin lab work
Wednesday, April 24, 2013
Mon., Apr. 29, 2013
Objectives: Identifying materials
Announcements: Grades
Opening Data: Show me your proposal
Begin lab work
Project Description (just in case)
Announcements: Grades
Opening Data: Show me your proposal
Project Description (just in case)
Fri., Apr. 26, 2013
Objectives: Identifying materials
Announcements: Warning! Alien Invasion!
Opening Data: It came from Outer Space
Project
Homework: Write a procedure for
determining the identity of the
metals from the ship. Include a
short paragraph describing how
you get from your procedure to
knowledge of the identities.
Announcements: Warning! Alien Invasion!
Project
Homework: Write a procedure for
determining the identity of the
metals from the ship. Include a
short paragraph describing how
you get from your procedure to
knowledge of the identities.
Thurs., Apr. 25, 2013
Objectives: Discover how much heat
energy is released by burning a cheeto
Announcements: Grades/Assignments
Opening Data: Set up your apparatus
25-35 mL water
Initial temp
Mass your cheeto
Heat - final temp
Calculate heat released
Homework: Convert to calories &
Calories. Look up the value for Cheetos
online how did you do? Is our value
too high or too low? Explain.
energy is released by burning a cheeto
Announcements: Grades/Assignments
Opening Data: Set up your apparatus
25-35 mL water
Initial temp
Mass your cheeto
Heat - final temp
Calculate heat released
Homework: Convert to calories &
Calories. Look up the value for Cheetos
online how did you do? Is our value
too high or too low? Explain.
Wed., Apr. 24, 2013
Objectives: Describe why continuous
heating does not always cause an increase
in temperature
Announcements: Grades/Assignments
Opening Data:
Examine heating & cooling curves
heating does not always cause an increase
in temperature
Announcements: Grades/Assignments
Opening Data:
Examine heating & cooling curves
- plateaus
- generalized heating/cooling curves
- freeze, melt, boil, condense
Thursday, April 18, 2013
Tues., Apr. 23, 2013
Objectives: Build a scientific instrument
that will allow the analysis & identification
of unknown substances
Announcements: Got your cereal box?
Opening Data: Diffraction of light
Diffraction Gratings
Build a spectroscope
Homework: I
that will allow the analysis & identification
of unknown substances
Announcements: Got your cereal box?
Opening Data: Diffraction of light
Diffraction Gratings
Build a spectroscope
Homework: I
Mon., Aor. 22, 2013
Objectives: Analyze data gathered showing
temperature profile of heating & cooling
Announcements: Bring a cereal box
Extra credit for up to 5 additional
(Have it tomorrow)
Warm-ups: How is heat different from temperature?
Data analysis - show me a graph
Homework: In your journal, write a
description of what you did and also
a paragraph explaining what some of
the other groups did. Draw a sketch
of your apparatus and include a graph
of a heating/cooling curve (cleaned up)
from your class notes. Tape this into
your journal.
temperature profile of heating & cooling
Announcements: Bring a cereal box
Extra credit for up to 5 additional
(Have it tomorrow)
Warm-ups: How is heat different from temperature?
Data analysis - show me a graph
Homework: In your journal, write a
description of what you did and also
a paragraph explaining what some of
the other groups did. Draw a sketch
of your apparatus and include a graph
of a heating/cooling curve (cleaned up)
from your class notes. Tape this into
your journal.
Fri., Apr. 19, 2013
Objectives: Develop an experimental
generalized heating/cooling curve for any
substance
Announcements: Bring a cereal box
Extra credit for up to 5 additional
Warm-ups: A 55 g sample of hot lava was
added to 100 mL of water at 20C. The water
increased in temperature to 96C. How much
head did the water gain? How much heat did
the lava lose? What is the heat content of the
lava in Joules/gram?
Changing state lab
Homework: Make your graphs
generalized heating/cooling curve for any
substance
Announcements: Bring a cereal box
Extra credit for up to 5 additional
Warm-ups: A 55 g sample of hot lava was
added to 100 mL of water at 20C. The water
increased in temperature to 96C. How much
head did the water gain? How much heat did
the lava lose? What is the heat content of the
lava in Joules/gram?
Changing state lab
Homework: Make your graphs
Wednesday, April 17, 2013
Thurs., Apr. 18, 2013
Objectives: Develop an experimental
generalized heating/cooling curve for any
substance
Announcements: Bring a cereal box
Extra credit for up to 5 additional
Warm-ups: Write an explanation describing
why the popularized versions reminds us of
the 4 laws of thermodynamics
Last of heat transfer notes
Changing state lab tomorrow
Homework: Finish your calorimeter &
bring it tomorrow
generalized heating/cooling curve for any
substance
Announcements: Bring a cereal box
Extra credit for up to 5 additional
Warm-ups: Write an explanation describing
why the popularized versions reminds us of
the 4 laws of thermodynamics
Last of heat transfer notes
Changing state lab tomorrow
Homework: Finish your calorimeter &
bring it tomorrow
Wed., Apr. 17, 2013b
Objectives: Examine ideas in Thermodynamics
Announcements: Avoid metal and glass
for the interior container in your calorimeter
Warm-ups: Write a description of something
that would demonstrate entropy and explain
how or why that demonstrates the idea.
4 Laws of Thermodynamics (click download)
Changing state lab
Cheeto Lab coming
Homework: Build a calorimeter
Announcements: Avoid metal and glass
for the interior container in your calorimeter
Warm-ups: Write a description of something
that would demonstrate entropy and explain
how or why that demonstrates the idea.
4 Laws of Thermodynamics (click download)
Changing state lab
Cheeto Lab coming
Homework: Build a calorimeter
Wed., Apr. 17, 2013
Objectives: Examine ideas in Thermodynamics
Announcements: Avoid metal and glass
for the interior container in your calorimeter
Warm-ups: Which of the following are exothermic & which are endothermic?
Changing state lab
Cheeto Lab coming
Homework: Build a calorimeter
Announcements: Avoid metal and glass
for the interior container in your calorimeter
Warm-ups: Which of the following are exothermic & which are endothermic?
- Soda evaporating from a glass
- Salt dissolving in water
Changing state lab
Cheeto Lab coming
Homework: Build a calorimeter
Tuesday, April 16, 2013
Tues., Apr. 16, 2013
Objectives: Examine ideas in Thermodynamics
Announcements: Avoid metal and glass
for the interior container in your calorimeter
Warm-ups: Which of the following are exothermic & which are endothermic?
Cheeto Lab coming
Homework: Build a calorimeter
Announcements: Avoid metal and glass
for the interior container in your calorimeter
Warm-ups: Which of the following are exothermic & which are endothermic?
- Soda evaporating from a glass
- Salt dissolving in water
Cheeto Lab coming
Homework: Build a calorimeter
Mon., Apr. 15, 2013
Objectives: Review of gas-mass stoichiometry
Announcements: Rocket project is due
Warm-ups: Rocket Project Comments & Returns
Homework: Build a calorimeter
Announcements: Rocket project is due
Warm-ups: Rocket Project Comments & Returns
Homework: Build a calorimeter
Thursday, April 11, 2013
Fri., Apr. 12, 2013
Objectives: Review of gas-mass stoichiometry
Announcements: Rocket project is due
Warm-ups: Calorimetry - Welcome to Thermochemistry
Sucrose + Sulfuric Acid (click)
Barium Hydroxide + Ammonium Thiocyanate
Hand-in rocket project
Homework: Build a calorimeter
Announcements: Rocket project is due
Warm-ups: Calorimetry - Welcome to Thermochemistry
Sucrose + Sulfuric Acid (click)
Barium Hydroxide + Ammonium Thiocyanate
Hand-in rocket project
Homework: Build a calorimeter
Thurs., Apr. 11, 2013
Objectives: Review of gas-mass stoichiometry
Announcements: All parts of this project
are due tomorrow
Warm-ups: 6.5 L of N2 gas is generated
(@STP) in the reaction of K3N with Cl2.
Write the balanced equation for the
reaction & determine what mass of K3N
& Cl2 are needed to produce that amount
of nitrogen gas.
Need help with parts of the rocket project?
Homework: Finish rocket project
Announcements: All parts of this project
are due tomorrow
Warm-ups: 6.5 L of N2 gas is generated
(@STP) in the reaction of K3N with Cl2.
Write the balanced equation for the
reaction & determine what mass of K3N
& Cl2 are needed to produce that amount
of nitrogen gas.
Need help with parts of the rocket project?
Homework: Finish rocket project
Tuesday, April 9, 2013
Wed., Apr. 10, 2013
Objectives: Launch rockets & record data
Announcements: Photo & Video the flights
Warm-ups: Remember that we will be recording launch data and voting on...
Best Flight
Longest Flight
Wackiest Flight
Coolest Rocket Design
Greatest Destruction Quotient
Homework: All parts of this project are
due on Friday (one week from today)
Announcements: Photo & Video the flights
Warm-ups: Remember that we will be recording launch data and voting on...
Best Flight
Longest Flight
Wackiest Flight
Coolest Rocket Design
Greatest Destruction Quotient
Homework: All parts of this project are
due on Friday (one week from today)
Tues., Apr. 9, 2013
Objectives: Rocket Fuelling
Announcements: Photo & Video the flights
Warm-ups: NEW H2O2 INFO
If you have a large bottle (>900mL): Use 12 mL H2O2
Small bottle: Use 10 mL
Homework: All parts of this project are
due on Friday (one week from today)
Announcements: Photo & Video the flights
Warm-ups: NEW H2O2 INFO
If you have a large bottle (>900mL): Use 12 mL H2O2
Small bottle: Use 10 mL
Homework: All parts of this project are
due on Friday (one week from today)
Thursday, April 4, 2013
Mon., Apr. 8, 2013
Objectives: Launch rockets & record data
Announcements: Photo & Video the flights
Warm-ups: Remember that we will be recording launch data and voting on...
Best Flight
Longest Flight
Wackiest Flight
Coolest Rocket Design
Greatest Destruction Quotient
Homework: All parts of this project are
due on Friday (one week from today)
Announcements: Photo & Video the flights
Warm-ups: Remember that we will be recording launch data and voting on...
Best Flight
Longest Flight
Wackiest Flight
Coolest Rocket Design
Greatest Destruction Quotient
Homework: All parts of this project are
due on Friday (one week from today)
Wednesday, April 3, 2013
Fri., Apr. 5, 2013
Objectives: Fueling of Rockets
Announcements: Fueling and photographing
Warm-ups: None
Homework: All parts of this project are
due on Friday (one week from today)
Announcements: Fueling and photographing
Warm-ups: None
Zn + HCl ↓ ZnCl2 + H2
H2O2 + MnO2 ↓ MnO + O2 + H2O
Use 20 mL of HCl to generate hydrogen
Use 25 mL of H2O2 to generate oxygen Homework: All parts of this project are
due on Friday (one week from today)
Thurs., Apr. 4, 2013
Objectives: Practice fueling process
Announcements: Cameras for massing out solids
Warm-ups: Show me what mass of Zn you will weigh out and what mass of MnO2 you need.
Mass out each of the solids
Label and store in a vial
Fill your bottle with water
Dry-run the fueling process
Homework: Finish history of rocketry
Announcements: Cameras for massing out solids
Warm-ups: Show me what mass of Zn you will weigh out and what mass of MnO2 you need.
Mass out each of the solids
Label and store in a vial
Fill your bottle with water
Dry-run the fueling process
Use 20 mL of HCl to generate hydrogen
Use 25 mL of H2O2 to generate oxygen Homework: Finish history of rocketry
Tuesday, April 2, 2013
Wed., Apr. 3, 2013
Objectives: Practice fueling process
Announcements: Be prepared to film or photograph your fuelling process
Warm-ups: Show me what mass of Zn you will weigh out and what mass of MnO2 you need.
Homework: Type and annotate all the math/chemistry
Announcements: Be prepared to film or photograph your fuelling process
Warm-ups: Show me what mass of Zn you will weigh out and what mass of MnO2 you need.
Zn + HCl ↓ ZnCl2 + H2
H2O2 + MnO2 ↓ MnO + O2 + H2O
Use 20 mL of HCl to generate hydrogen
Use 25 mL of H2O2 to generate oxygen Homework: Type and annotate all the math/chemistry
Subscribe to:
Comments (Atom)