Y7 sci Separating insoluble mixtures

Mixtures (made of 2 or more pure substances mixed together) can be separated by different techniques

• True

• False

Many substances we use everyday were once part of a mixture.

• True

• False

The separation technique will depend on the substances in the mixture (different substances require different separation methods)

• True

• False

Magnetic separation works by:

• using density

• using magnetic forces

• using size of particles

• using boiling points

Which one of the following would you use to separate sand from iron (magnetic) filings?

• a magnet

• filter paper

• chromatography paper

• evaporation

Salt is mixed with water and dissolved creating a solution. Magnetic separation can be used to separate the salt from the water.

• True

• False

Decanting and centrifugation separation works by:

• using density

• using magnetic forces

• using size of particles

• using boiling points

Which one of the following technique would you use to separate settled mud (sediment) and water?

• a magnet

• decanting (gravity separation)

• chromatography paper

• evaporation

Sugar is mixed with water and dissolved creating a solution. Decanting can be used to separate the sugar from the water.

• True

• False

Sieving separation works by:

• using density

• using magnetic forces

• using size of particles

• using boiling points