Thursday, April 11, 2013

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

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)

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)

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)

Wednesday, April 3, 2013

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

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. 
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