What is it called when a substance changes from one physical state to another?
A) Baume gravity
B) Friction
C) Phase change
D) Boiling point
Answer: C
Explanation: A) Incorrect. Baume gravity is the industrial manufacturing measurement standard used to measure the gravity of nonhydrocarbon materials.
B) Incorrect. Friction is the resistance encountered when one material slides against another.
C) Correct. Phase change occurs when a substance changes from one physical state to another.
D) Incorrect. Boiling point is the temperature at which liquid physically changes to a gas at a given pressure.
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