Question

1. Of the following, the only change that is an example of a chemical change is —

A. water evaporating from a puddle
B. an iron nail rusting and turning an orange color
C. a piece of paper being cut into smaller pieces
D. a stick being broken in half




2. All of the following involve chemical changes except —

A. an ice cube disappearing after being placed in a glass of water
B. frying an egg
C. a piece of silver jewelry tarnishing
D. a green coating forming on a copper statue