Mon., June 3, 2013

Objectives:  Final Exam ?
Announcements:  All work is due tomorrow
Final Exam (need more time?)
Acids & Bases

Fri., may 31, 2013

Objectives:  Final Exam
Announcements:  No late work will be 
accepted after Jun. 4
Final Exam (day 2)

Thurs., May 30, 2013

Objectives:  Final Exam
Announcements:  No late work will be 
accepted after Jun. 4
Final Exam

Wed., May. 29, 2013

Objectives:  Prepare for final exam
Announcements:  No late work will be 
accepted after Jun. 4
Including: Spectroscope
Graphing & identifying unknown
Calculating Freqs & Energies
Reviewing for final exam

Tues., May 28, 2013

Objectives:  Prepare for final exam
Announcements:  No late work will be 
accepted after Jun. 4
Including: Spectroscope
Graphing & identifying unknown
Calculating Freqs & Energies
Reviewing for final exam

Thurs., May 23, 2013

Objectives:  Student presentations/Using 
chemical skills to identify unknown metals
Announcements:  No late work will be 
accepted after Jun. 4
Grades for all this work:
Build a Spectroscope
Observe mercury & draw the spectrum
Construct a Calibration Graph
Identify unknown gas
Calculate the frequencies & energies
of the bright lines in the spectrum of
mercury

Wed., May 22, 2013

Objectives:  Student presentations/Using 
chemical skills to identify unknown metals
Announcements:  No late work will be 
accepted after Jun. 4
Build a Spectroscope
Observe mercury & draw the spectrum
Construct a Calibration Graph
Identify unknown gas
Calculate the frequencies & energies
of the bright lines in the spectrum of
mercury

Tues., May 21, 2013

Objectives:  Student presentations/Using chemical skills to identify unknown metals
Announcements:  No late work will be accepted after Jun. 4 
Presentations?Build a Spectroscope
Calibrating/Calibration Graph

Mon., May 20, 2013

Objectives:  Student presentations/Using chemical skills to identify unknown metals

Announcements:  No late work will be accepted after Jun. 4
Announcements:  
Presentations?Build a Spectroscope

Fri., May 17, 2013

Objectives:  Student presentations/Using chemical skills to identify unknown metals

Announcements:  No late work will be accepted after Jun. 4
Announcements:  
Presentations?Build a Spectroscope

Thurs., May 16, 2013

Objectives:  Student presentations/Using chemical skills to identify unknown metals

Announcements:  No late work will be accepted after Jun. 4
Announcements:  
Presentations?Build a Spectroscope

Wed., May 15, 2013

Objectives:  Using chemical skills to identify unknown metals
Announcements:  No late work will be accepted after Jun. 4
Announcements:  Speed of light

Relationship between wavelength, 
frequency & Energy

Build a Spectroscope

Tues., May 14, 2013

Objectives:  Using chemical skills to identify unknown metals
Announcements:  Video due: Thurs., May 16
EM Spectrum video 2
EM Spectrum - Fill in

Build a Spectroscope

Mon., May 13, 2013

Objectives:  Using chemical skills to identify unknown metals
Announcements:  Video due: Thurs., May 16
EM Spectrum discussion
Diffraction gratings & emission spectra
Purpose & use of a Spectroscope
EM Spectrum video 1
EM Spectrum video 2

Tues., May 7, 2013

Objectives:  Using chemical skills to identify unknown metals
Announcements:  Recording should be in full swing
Project: Last day in class to work: Fri., May 10
Video due: Thurs., May 16
Continue lab work with metal samples
Project Description (just in case)
It came from outerspace

Mon., May 6, 2013

Objectives:  Using chemical skills to identify unknown metals
Announcements:  Time to plan your story
Opening Data: Begin recording video in lab

Continue lab work with metal samples
Project Description (just in case)
It came from outerspace

Thurs., May 2, 2013

Objectives:  Using chemical skills to identify unknown metals
Announcements:  Last day for missing work
Opening Data: Some sample videos

Continue lab work with metal samples
Videotape methods, calculations & results
Project Description (just in case)
It came from outerspace

Wed., May 1, 2013

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

Tues., Apr. 30, 2013

Objectives:  Identifying materials

Announcements:  Grades
Opening Data: None

Begin lab work

Project Description (just in case)

Mon., Apr. 29, 2013

Objectives:  Identifying materials

Announcements:  Grades
Opening Data:  Show me your proposal

Begin lab work

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.

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.

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

• plateaus
• generalized heating/cooling curves
• freeze, melt, boil, condense

Homework: I

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

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. 

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

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

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

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?

• Soda evaporating from a glass
• Salt dissolving in water

4 Laws of Thermodynamics
Changing state lab
Cheeto Lab coming
Homework: Build a calorimeter

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?

• Soda evaporating from a glass
• Salt dissolving in water
•  

4 Laws of Thermodynamics

Changing state lab
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

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

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

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)

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)

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)

Fri., Apr. 5, 2013

Objectives:  Fueling of Rockets
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

Use 20 mL of HCl to generate hydrogen

Use 25 mL of H2O2 to generate oxygen
Homework: Finish history of rocketry

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. 

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

Tues., Apr. 2, 2013

Objectives:  Regroup, reinitialize & reorganize Announcements:  Your visual record of the experience should be well on it's way
Your history of rocketry should be nearly finished
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: Finish the history of rocketry