Unit 1 Solids, Liquids, and Gases Test

Front

What happens to molecules when water changes from a liquid to a gas?

Back

Molecules spread farther apart.

Front

What occurs to the motion of particles in an ice cube as it melts?

Back

The particle motion increases.

Front

What sequence of particle arrangements represents decreasing kinetic energy?

Back

R→Q→S (Solid → Liquid → Gas)

Front

What happens to water particles when heat energy is added?

Back

Particles move faster, and temperature increases.

Front

What likely causes a change in state from solid to liquid?

Back

An increase in thermal energy.

Front

Define 'solid' in terms of particle arrangement.

Back

In a solid, particles are closely packed together and vibrate in fixed positions.

Front

Define 'liquid' in terms of particle arrangement.

Back

In a liquid, particles are close together but can move past one another, allowing the liquid to flow.

Front

Define 'gas' in terms of particle arrangement.

Back

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

Front

What is kinetic energy?

Back

Kinetic energy is the energy of motion; it increases as particles move faster.

Front

How does temperature relate to particle motion?

Back

As temperature increases, particle motion increases.