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Good afternoon!. Take out Act. 24 data table and analysis to stamp it! Agenda Review Act. 24 Set up Act. 25 Act. 25 Exit Slip Homework. Act. 25: Conservation of Mass. Date: 1/23/13 Challenge Question: Getting Started: Which one is a closed system? Which one is an open system? Why?

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  1. Good afternoon! Take out Act. 24 data table and analysis to stamp it! Agenda Review Act. 24 Set up Act. 25 Act. 25 Exit Slip Homework

  2. Act. 25: Conservation of Mass • Date: 1/23/13 • Challenge Question: • Getting Started: Which one is a closed system? Which one is an open system? Why? • What type of system is a person, open or closed? Why?

  3. Introduction pg. B-64 • Challenge Question • Glossary: • 1. Closed System • 2. Open System

  4. Law of conservation of mass • Matter or mass are neither created nor destroyed in a chemical reaction. • At the atomic level, atoms are conserved during chemical reactions, so they are simply rearranged. • Law of Conservation of Matter

  5. Materials pg. • Safety: • Procedure: • Part A: Chemical Reaction in a Closed System Complete Steps # 1- 9 Data: Copy data table in your journal Part B: Another Chemical Reaction in a Closed Chamber Complete Steps # 11-19

  6. Complete Part A • Follow the steps in the procedure, steps # 1-9 • Procedure Captain-please read the steps • Facilitator-make sure everyone is on task and completes there job. Also can conduct the experiment • Spokesperson-conduct the experiment & record results • Getter- Get materials and record the results in data table • KEEP GOGGLES ON AT ALL TIMES!

  7. HOmework • Analysis # 1a

  8. Complete Part B • Follow Steps # 10-19 • Procedure Captain-please read the steps • Facilitator-make sure everyone is on task and completes there job. Also can conduct the experiment • Spokesperson-conduct the experiment • Getter- Get materials and record the results in data table • KEEP GOGGLES ON AT ALL TIMES!

  9. Exit slip homework • Answer Challenge Question-Act. 25 • Aluminum-product • Sodium phospate-reactant • Analysis # 1b- 2 • Analysis #3-create as a persuasive letter. Choose a company to write to- Due Monday

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