Question

A scientist describes the molecules of a substance as it changes from one state of matter to another. She states that the speed of the molecules slows down over time. Which phase change could the scientist be describing?

A.gas to liquid
B.liquid to gas
C.solid to gas
D.solid to liquid

Answer 1

A.

Step-by-step explanation:

Particles in gas move very fast and quickly while particles in liquids are slow and closer together.

Answer 2

I think A. Gas to liquid