Which of the following is a physical change?
A
Freezing ice cream
B
dissolving calcium in water
C
burning kerosene
D
Exposing white phosphorus to air
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
Freezing is a physical change. It involves a liquid changing states to a solid. Thus, freezing a substance will not change its chemical identity, but its state.
Source: WAEC / JAMB / NECO Classroom Archive (Record #4286)