Question

When wax is heated, it turns into a liquid. How are the wax molecules affected by this change of state? A. The molecules gain energy. B.The molecules lose energy. C.The molecules move closer to one another. D.The space between the molecules increases. E.The space between the molecules decreases.

Answer 1

Solid --> liquid

Solid particles: packed; barely moving; cold
Liquid particles: free-moving; not too packed; warm
Gas particles: spread-out; moves extremely fast; hot

Solid --> liquid

Packed particles to free-moving particles; cold to warm

The molecules gain energy. Answer Choice A
The space between the molecules increases. Answer Choice D

Answer 2

A. The molecules gain energy. It's the same as melting ice, which gains energy... but with wax