Question

question 2 of 30
during which change is heat energy released?

a. melting

b. condensation

c. sublimation

d. boiling

Explanation:

• Melting (A): Solid to liquid, absorbs heat (endothermic).
• Condensation (B): Gas to liquid, releases heat (exothermic).
• Sublimation (C): Solid to gas, absorbs heat (endothermic).
• Boiling (D): Liquid to gas, absorbs heat (endothermic).

Only condensation releases heat.

Answer:

B. Condensation