AP BIOLOGY

Detailed explanation-1: -Point out to students that molecules of hot water are moving faster and are slightly further apart. The molecules of cold water are moving slower and are a little closer together.

Detailed explanation-2: -Molecules in a gas have lots of energy and spread out even more than molecules in a liquid. Warm water has more energy than cold water, which means that molecules in warm water move faster than molecules in cold water.

Detailed explanation-3: -The molecules move faster in a gaseous state due to the absence of force of attraction between the molecules when compared to the molecules which are present in solid and liquid state.

Detailed explanation-4: -Gases. If the particles of a substance have enough energy to completely overcome intermolecular interactions, then the particles can separate from each other and move about randomly in space. This describes the gas state, which we will consider in more detail elsewhere.

Detailed explanation-5: -In gases the particles move rapidly in all directions, frequently colliding with each other and the side of the container. With an increase in temperature, the particles gain kinetic energy and move faster.