1. Alka Seltzer Lab

2. Formal assessment: Analyzing student procedures, data and conclusions
Objectives:
Today I will be able to:
Design and conduct a controlled experiment investigating ways to speed up a chemical reaction
Informal assessment: monitoring group discussions as they design and conduct the experiment
Formal assessment: Analyzing student procedures, data and conclusions
Common Core Connection:
Use appropriate tools strategically
Attend to precision

3. Lesson Sequence Day 1 Day 2 Evaluate: Warm Up
Engage/Explore: Pre-Lab Observation
Explain: Designing a problem
Elaborate: Writing a Procedure
Evaluate: Exit Ticket
Day 2
Engage/Elaborate: Data Collection
Elaborate: Conclusion Writing
Evaluate: Peer Evaluation

4. Warm Up (Day 1) What are the steps to the Scientific Method?
What does it mean to control an experiment? Why is this important?
How many kilometers are in 3,456 centimeters?

5. Objectives Today I will be able to:
Design and conduct a controlled experiment investigating ways to speed up a chemical reaction

6. Homework Study for Scientific Notation Quiz Tomorrow
Begin studying for Intro to Chemistry Exam
Bring technology to class for Monday’s Lesson

7. Agenda – Day 1 Warm Up Pre-Lab Observation Designing a problem
Writing a Procedure
Exit Ticket

8. Pre – Lab Observation

9. Lab Safety Goggles and Aprons must be worn to participate
Do not get the Alka-Seltzer tablet wet before beginning the reaction
Liquid waste can be disposed of down the drain

10. Designing a Problem
Brainstorming

11. Brainstorming How does your family keep food from spoiling quickly?
How could you get a solid (like sugar) to dissolve quickly in water?
What materials are available to use in the lab?
Lab Materials Available
Water
Beaker
Stopwatch
Alka-Seltzer (2 tablets)
Stirring Rod
Hot Plate
Mortar and Pestle

12. Procedure
Write the procedure and design the data table. Both must be approved by the teacher before you may begin collecting data.

13. Exit Ticket – Day 1 What variable are you testing in your experiment?
How do you plan on controlling your experiment?