5
QuizMultiple Choice

Energy in Chemical Reactions — Test

Question 5 • Chemistry

Which statement best describes the direction of heat flow by conduction between two samples of the same material?

Answer
A
Heat flows from slower molecules to faster molecules when they collide.
B
Heat flows from faster molecules to slower molecules when they are near.
C
Heat flows from faster molecules to slower molecules when they collide.
D
Heat flows from slower molecules to faster molecules when they are near.

Explanation

In conduction, neighboring particles transfer energy through collisions. The faster-moving molecules have greater kinetic energy, so energy flows from them to slower-moving molecules during collisions. Therefore, the best description is “Heat flows from faster molecules to slower molecules when they collide.”

AI-written and checked against the verified answer.

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