The particles of a substance are freely moving, but gradually slowing down. Eventually, other particles stick to these particles, limiting their free movement.

Question

What kind of phase change is occurring?

Responses

condensationcondensation

meltingmelting

freezingfreezing

vaporizationvaporization

Answer 1

The phase change occurring in this scenario is condensation.

During condensation, gas particles lose energy and slow down, eventually coming together and forming a liquid as they stick to each other. This matches the description of particles freely moving but gradually slowing down and then sticking together to limit their movement.