MATTER

Everything around us that takes up space is made up of...

• wood.

• matter.

• water.

• air.

Each type of matter is..

• air.

• an object.

• a substance.

• wood.

The amount (cantidad) of matter in objects is called...

• mass.

• volume

• density.

• thoughts.

Volume is measured in...

• kilogrammes.

• centimetres.

• litres.

• metres.

Gases...

• have a fixed shape and a fixed volume.

• have a fixed volume, but their shape can change.

• do not have a fixed shape nor a fixed volume.

• have a fixed shape, but their volume can change.

There are two types of changes in matter...

• condensation and solidification.

• physical and chemical changes.

• mixtures and evaporation.

• evaporation and melting.

Contraction is...

• combustion.

• evaporation.

• chemical change.

• a physical change.

When the temperature of an object increases...

• it gets bigger.This is called expansion.

• it gets smaller.This is called contraction.

• it gets bigger.This is called contraction.

• it gets smaller.This is called expansion.

Melting is...

• when a liquid is heated and changes into a gas.

• when a liquid cooled and changes into a solid.

• when a solid is heated and changes into a liquid.

• whn a gas is cooled and changes into a liquid.

When a substance changes into another different substance it is called...

• chemical change.

• expansion.

• physical change.

• evaporation.