Penny placed a tablet of baking soda in a cup of water. The tablet immediately began to bubble, fizz, and eventually dissolve. Did a physical or chemical change occur and how do you know? A chemical; the fizzing sounds indicates a new substance was formed

B physical; the water can be boiled off and the tablet residue would be left

C physical; the tablet only dissolved in the water and formed a mixture

D chemical; the tablet gave off a gas in the form of bubbles