Question

1. describe the relationships between: a) motion of molecules and the kinetic energy of the particles b) kinetic energy of particles and temperature of particles c) transfer of thermal energy and change in state of matter of particles d) the state of matter and the motion of the particles 4. use your model to predict what would happen if thermal energy was removed from the system?

Explanation:

a) The kinetic energy of particles is directly related to their motion. Faster - moving molecules have higher kinetic energy.
b) Temperature is a measure of the average kinetic energy of particles. Higher temperature means higher average kinetic energy of particles.
c) Transfer of thermal energy can cause a change in the state of matter. Adding thermal energy can cause melting, vaporization etc., while removing it can cause freezing, condensation etc.
d) The state of matter is determined by the motion of particles. In solids, particles vibrate in place; in liquids, they move more freely; in gases, they move rapidly and are far apart.
When thermal energy is removed from a system, the kinetic energy of particles decreases. This can lead to a change in state of matter, such as a gas condensing into a liquid or a liquid freezing into a solid. The particles move more slowly as their kinetic energy drops.

Answer:

a) Faster - moving molecules have higher kinetic energy.
b) Higher temperature means higher average kinetic energy of particles.
c) Transfer of thermal energy can cause state - change (adding: melting/vaporization; removing: freezing/condensation).
d) State of matter depends on particle motion (solid: vibrate; liquid: more free; gas: rapid and far apart).
If thermal energy is removed from the system, particle kinetic energy decreases, potentially causing a state - change like gas to liquid or liquid to solid.