Question

When heat energy is added, two changes are observed: Change A: Solid changes to a liquid. Change B: Solid changes directly to a gas. What are the names for phase changes A and B?

a-- A is freezing and B is condensation.

b--A is freezing and B is sublimation.

c-- A is melting and B is condensation.

d--A is melting and B is sublimation.

THE ANSWER IS D

Answer 1

Answer:

The answer is d-- A is melting and B is sublimation.

Explanation:

A is melting because a solid is changing into a fluid and B is sublimation because a solid changing straight into a gas.

Answer 2

Answer:

D) A is melting and B is sublimation.