If somebody asks “What state is the material?” they mean is it a SOLID, LIQUID or a GAS?

Solids, liquids and gases are sometimes called the three states of matter

This is what you need  to know:
Solids always have the same shape.
Liquids and gases take the shape of their container

Gases will always completely fill whatever container they are placed in
Solids and liquids always have the same volume

Solids do not easily flow
Gases and liquids can flow

Some examples:
Ice is a solid
Water is a liquid
Water vapour is a gas

More examples:
Rock, Salt, Wax and sugar are all solids.
Petrol, vinegar and orangejuice are all liquids.
Air, carbon dioxide and helium are all gases
.

Shape

Volume

Able to flow

Solids

Always have the same shape

Always have the same volume

Don’t flow very easily

Liquids

Take the shape of their container

Always have the same volume

Can flow

Gases

Take the shape of their container

Will fill whatever container they are placed in

Can flow

    

Solids, liquids and gases are called the three STATES of mater

Changing from one state to another 

Melt: 

Evaporate: 

Condense:

Freeze (solidify):         

When a solid turns to a liquid

When a liquid turns to a gas

When a gas (vapour) turns to a liquid

When a liquid turns to a solid

(See The Water Cycle)

Diagram to show changing state. Which words go into the boxes?
EVAPORATE, CONDENSE
, MELT and FREEZE
Place mouse over image to see the answers


We measure can measure the volume of a liquid using a beaker or a measuring cylinder but the measuring cylinder is a lot more accurate

We measuring liquid volume in millilitres (ml)

Image2

This is a measuring cylinder.

Notice that you look at it from the side, keeping your eyes level with the liquid.

The volume of water in this measuring cylinder is 16 ml