The Stages of Matter

SolidLiquidGas

Solids

• Particles in a solid are tightly packed together in a regular pattern

• The particles vibrate but do not move from place to place

• A solid maintains its shape

Liquids

• Particles of a liquid are close together but do not have a regular pattern

• These particles vibrate, move about and slide past each other

• A liquid takes the shape of

it’s container

Gas

• The particles of a gas are far apart with no pattern

• These particles vibrate and move freely at high speeds

• A gas takes the shape of its container and can change volume

States of Matter (write this down)

Solid - The molecules of a solid are tightly packed and do not move very far. A solid holds it’s shape.

Liquid - The molecules of a liquid are close together but move around a lot. A liquid takes the shape of its’ container.

Gas - The molecules of a gas are far apart and move quickly. A gas takes the shape of it’s container and expands or shrinks to fill its container.

The Addition Of Heat

Solid Liquid Gas (Ice) (Water) (Steam)

Changing from State to State

• With the addition or removal of heat, one substance can be either a solid a liquid or a gas

melting freezing condensation evaporation

Melting

Changing from a solid to a liquid

(+ heat)

Freezing

Changing from a liquid to a solid

(- heat)

Evaporation

Changing from a liquid to a gas

(+ heat)

Condensation

Changing from a gas to a liquid

(- heat)

Quiz Time!

Which process is occurring?

melting freezing condensation evaporation

http://www.harcourtschool.com/activity/states_of_matter/

Why Your Glass Sweats