Question

How do the molecules differ in a cup of hot water and a cup of cold water?(1 point)
Responses

In the cold water, there are more molecules.
In the cold water, there are more molecules.

In the cold water, the molecules are moving faster than in the hot water.
In the cold water, the molecules are moving faster than in the hot water.

In the hot water, there are more molecules.
In the hot water, there are more molecules.

In the hot water, the molecules are moving faster than in the cold water.

Answer 1

In the hot water, the molecules are moving faster than in the cold water.

Higher temperature means greater average kinetic energy, so the molecules move more rapidly. (For equal volumes the number of molecules is essentially the same.)