Front

Why can gases be compressed but solids cannot?

Back

Gases have large spaces between particles and weak forces.

Front

Why do liquids and gases diffuse faster than solids?

Back

Because liquids and gases have larger spaces between particles.

Front

What does density measure?

Back

The ratio of mass to volume.

Front

What factors affect the rate at which particles diffuse?

Back

Temperature, mass, state of the particles, and size of spaces between particles.

Front

What is diffusion?

Back

The random movement of liquid or gas particles from a high concentration to a low concentration to spread evenly.

Front

What is the particle model of matter?

Back

A theory that states all matter is made up of tiny particles that are in constant motion.

Front

How does temperature affect particle movement?

Back

Higher temperatures increase particle movement, causing them to move faster.

Front

What is the difference between solids, liquids, and gases in terms of particle arrangement?

Back

Solids have closely packed particles, liquids have loosely packed particles, and gases have widely spaced particles.

Front

What happens to the density of a substance when it is heated?

Back

Generally, the density decreases as the substance expands.

Front

What is the relationship between mass and volume in determining density?

Back

Density is calculated by dividing mass by volume (Density = Mass/Volume).