Kinetic Theory and Changes of State

Select the statements that are correct for solids.

• The particles are spaced far apart

• The particles have little energy

• The particles are in fixed positions

• The forces between particles are weak

• The particles can only vibrate

Select the statements that are correct for liquids.

• The particles are spaced far apart

• The particles move at low speeds

• The particles are in fixed positions

• The forces between particles are very strong

• The particles can only vibrate

Select the statements that are correct for gases.

• The particles are spaced far apart

• The particles move at low speeds

• The particles are in fixed positions

• The forces between particles are very weak

• The particles can only vibrate

The sum of all the particles' kinetic and potential energy is called its ________ energy.

__________ is when a substance changes from a gas to a liquid.

_______ is when a substance changes from a solid to a liquid.

When a substance sublimates it changes from a _____ to a gas.

Changes of state are ________ changes.

• physical

• chemical

Select the statements that apply to freezing.

• The particles gain kinetic energy

• The particles lose kinetic energy

• The particles move closer together

• The particles move further apart

• The forces of attraction decrease in strength

Select the statements that apply to evaporation.

• The particles gain kinetic energy

• The particles lose kinetic energy

• The particles move closer together

• The particles move further apart

• The forces of attraction decrease in strength