Matter-Science

What are the three states of matter?

They are solid liquid and gas.

How are particles arranged in a solid?

They are tightly packed and vibrate.

How are particles arranged in a liquid?

They are close and slide past each other.

How are particles arranged in a gas?

They are far apart and move fast.

Why do solids keep their shape?

Their particles cannot move freely.

Why do liquids change shape?

Their particles move around each other.

Why do gases spread out?

Their particles move fast and fill space.

What happens when a solid melts?

Particles gain energy and move more.

What happens when a liquid evaporates?

Particles gain energy and escape.

What is freezing?

A liquid turning into a solid.

What is condensation?

A gas turning into a liquid.

What is sublimation?

A solid turning into a gas.

What is diffusion?

Particles spreading out evenly.

Why is diffusion faster in gases?

Gas particles move faster.

What is density?

Mass in a given volume.

Why are solids dense?

Their particles are close together.

Why are gases not dense?

Their particles are far apart.

What happens when temperature increases?

Particles move faster.

What is a physical change?

A change with no new substance.

What is a chemical change?

A change that makes a new substance.