States of Matter

Front

What happens to most substances when their temperature is lowered?

Back

They contract.

Front

What happens to the total kinetic energy when temperature increases?

Back

It increases.

Front

In the kinetic theory, what happens when particles collide?

Back

They transfer energy.

Front

When thermal energy is added to a substance, what happens to its particles?

Back

They move faster.

Front

What happens to particles when thermal energy is removed from a substance?

Back

They move slower.

Front

Define 'solid' in terms of particle arrangement and movement.

Back

In solids, particles are closely packed in a fixed arrangement and vibrate in place.

Front

Define 'liquid' in terms of particle arrangement and movement.

Back

In liquids, particles are close together but can move past each other, allowing liquids to flow.

Front

Define 'gas' in terms of particle arrangement and movement.

Back

In gases, particles are far apart and move freely, filling the container they are in.

Front

What is the relationship between temperature and kinetic energy?

Back

As temperature increases, the kinetic energy of particles increases.

Front

What is thermal energy?

Back

Thermal energy is the total kinetic energy of particles in a substance.