Question

Increasing or Decreasing kinetic energy causes the movement of molecules which leads to phase change. True or False

Answer 1

True.

Increasing or decreasing kinetic energy of molecules can lead to phase changes. When you add heat (increasing kinetic energy) to a substance, it can change from a solid to a liquid (melting) and from a liquid to a gas (vaporization). Conversely, when you remove heat (decreasing kinetic energy), it can change from a gas to a liquid (condensation) and from a liquid to a solid (freezing). These phase changes are driven by changes in the kinetic energy of the molecules within the substance.