UNIT 4. MATTER CHANGES

A physical combination of two or more substances is called a ....

A mixture in which we can see the elements because they are not combined evenly is called a

• Heterogeneous mixture

• Pure substance

• Homogeneous mixture

• Matter

We can use magnetic separation to separate metals from non-magnetic substances

• True

• False

To separate water and oil we use

• Decantation

• Filtration

• Distillation

• Magnetic separation

How can we separate oil and water

• Filtration

• Evaporation

• Distillation

• Decantation

A face mask is an example of

• Filtration

• Distillation

• Homogeneous mixture

• Sediment

If we dissolve salt in water we create a mixture called

We use distillation to separate liquids with different

• Colour

• Taste

• Boling point

• Density

A chemical reaction DOESN'T change the properties of a substance and DOESN'T contain anything new

• True

• False

Combustion is a chemical reaction that produces energy in the form of

• Heat

• Sound

• Movement

• Light