particle model of matter

How are particles arranged in a solid?

Very close together in a regular pattern.

describe densities of solid liquid and gases

Solid particles most dense as particles are close together

Liquid or particles less dense than solids

Gas have low densities

How do particles move in a liquid?

They move past each other.

Extra nofe

Solids – particles don’t have much energy so they can only vibrate in fixed positions.

Liquid – moving random directions at low speeds.

Gases – trouble and random directions at high speeds.

What are the properties of liquids?

Can flow, take the shape of their container, fixed volume.

What hold particles in a solid close together

The strong forces of attraction

What are the forces that are between liquid particles

Weaker forces (than solid )

How are particles arranged in a liquid?

Close together in an irregular arrangement.

How do particles move in a liquid?

They move past each other.

What are the properties of liquids?

Can flow, take the shape of their container, fixed volume.

How are particles arranged in a gas?

Far apart and randomly distributed.

How do particles move in a gas?

They move randomly and freely.

What are the properties of gases?

Can flow, no fixed shape or volume, always fill their container.

What forces exist between particles in a gas?

No attractive forces.

What happens when particles have more kinetic energy?

They move faster.