please help me find a demo i can do for science class?

Question

I have to do a short demo for science class. It has to be science related and it has to be safe. We are allowed to do whatever we want to do. What is something easy that i can do?

Answer 1

Place a can of Diet Pepsi in water, and it will float. Place a can of Regular Pepsi in water and it will sink. This is due to the difference in density between Diet and Regular soda.

This demo will also work with Coke/Diet Coke...

Look at the following website:

http://www.middleschoolscience.com/dietcoke.htm