Which of the following is an example of a physical change?
A
Digestion of food
B
Rusting of iron
C
Burning of wood
D
Melting of ice
Correct Answer: Option D — Melting of ice
Explanation:
Melting of ice is a physical change because it involves only a change in the state of matter from solid to liquid without altering its chemical composition. The water molecules remain chemically identical throughout the process.