Apentix/AP Chemistry/Unit 6: Thermodynamics/Question

AP Chemistryeasymcq1 pt

Why does a hot metal block cool when placed in cold water?

A.Heat flows from the metal to the water until temperatures match

B.Cold flows from the water into the metal

C.The metal's atoms become slower by themselves

D.Water molecules move into the metal

Explanation

Core Concept

Heat spontaneously moves from hotter to colder objects. The transfer continues until thermal equilibrium — equal temperatures — is reached.

Correct Answer

AHeat flows from the metal to the water until temperatures match

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