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
1 answer
hint: both correct choices involve only water
1 answer