Question

What happens to water molecules as they slow down during a phase change?

a) Become an element
b) Remain a compound
c) Become a compound
d) Remain a mixture

Answer 1

During a phase change, water molecules slow down and their arrangement changes, but they remain as water molecules.

Step-by-step explanation:

During a phase change, water molecules slow down and their arrangement changes, but the molecules themselves stay intact. For example, when liquid water boils and turns into steam, the water molecules move apart but remain water molecules. This is a physical change, so the answer is remain a compound.