Question

Which of the following is not a physical change? Dissolving salt in water Baking a cake Melting wax Freezing water

Answer 1

Maybe this will help:

http://chemistry.about.com/od/matter/a/10-Physical-Change-Examples.htm

http://chemistry.about.com/od/matter/a/10-Chemical-Change-Examples.htm

Answer 2

baking a cake. since there is a change in the composition of the substances present in the cake while it is being cooked.

Answer 3

Baking a cake. Since, a physical change is a reversible change and u cant convert the cake back to flour. So, baking a cake is a chemical change.