2 clear soda bottles with labels removed 2 Alka-Seltzer tablets (break both in half) Aluminum foil 150W light fixture (heat lamp)
2 thermometers Ruler
250 mL beaker + water stopwatch or timer
Procedure: 1) Examine the list of materials. 2) In a small group breakout room session, discuss how you will use the materials to conduct an experiment that will provide you with evidence to answer the question and prove your hypothesis. Write your notes about the procedure using these questions.

How much water will you add to each bottle?

Where should you hang the thermometer in the control bottle?

How would you make sure gas doesn’t escape?

Why do you keep the amount of energy transferred to each bottle the same?

How far will each bottle be from the light source?

How will you measure the temperature of the gas?