Question

Need help coming up with an experiment!! Please help!!!

Design two experiments that will compare two different factors that may affect the rate of the Alka-Seltzer reaction. Possible factors to be investigated include temperature, surface area, agitation, and amount of reactants. Remember to make sure there is only one independent variable in your experimental design for each experiment. You can only test one factor at a time. You will need to have two separate procedures for each factor tested.

Answer 1

You must use these materials:
Alka-Seltzer tablets
Empty and clean water or soda bottles (12 oz to 24 oz)
Balloons (to capture the carbon dioxide gas produced)
Water
Clock

Answer 2

I already have one of the experiments, but I need two. The experiment I have is:
Pour 2 cups of hot water into a soda bottle.
Quickly put a balloon over the opening.
As the tablet dissolves, the balloon should fill with carbon dioxide
Once it has finished dissolving, record how big the balloon filled.
Pour the water out, and replace it with room temperature water.
Repeat steps 2, 3, and 4
Pour the water out and replace with cold water.
Repeat steps 2, 3 and 4