Matter and Energy

Heterogeneous mens that...

• We can see the different components

• We can't see the different componets

• That it is a Pure Substance

• That is temporary

A mixture is...

• Only one type of matter

• Chemical reactions

• 2 or more types of matter

• Reversible change

How many methods there are to separate mixtures?

• 8

• 3

• 5

• 4

What we can separate in decantation TWO OPTIONS

• solid/liquid

• liquid/soluble substance

• liquid/liquid with different densities

• liquid/liquid with different boiling points

What we use to separate metals?

• A pen

• A magnet

• A mask

• A book

How are the atoms in solid ice?

• Close together but they move

• Further apart and move quickly

• Packed together and don't move

• There are no atoms

The changes are temporary in...

• Reversible changes

• Irreversible changes

What is the definition of mass?

We can measure density in...

• Grams per mililitres (g/ml)

• kilograms per litre (kg/l)

• mililitres per litres (ml/l)

• grams per kilograms (g/kg)

What we need dor combustion?

• Paper and fire

• Oxygen and fuel

• Carbon dioxide and fuel

• Oxygen and fungi