PHS: KS3 Mixtures and Separation

What does filtering separate?

• a liquid from a solution

• two solids mixed together

• a solid from a liquid

• two liquids in a mixture

A substance that won't dissolve in a liquid is called...?

• soluble

• insoluble

• solvent

• solute

When a solid seems to disappear in a liquid, we call it...?

• dissolving

• distilling

• filtration

• chromatography

Which of these words best describes a solid that gets dissolved in a liquid?

• soluble

• insoluble

• solvent

• solute

Which of these words best describes a liquid that dissolves things?

• soluble

• insoluble

• solvent

• solute

What do we call it when a solvent cannot dissolve any more solute?

• saturated

• unsaturated

• solution

• insoluble

When evaporating a liquid, why do we stop the heating before all of the liquid has evaporated?

• to stop it spitting

• to stop it getting too hot

• to make bigger crystals

• to stop it exploding

At what temperature does water evaporate?

• any temperature above 100^oC

• at 100^oC exactly

• any temperature above 0^oC

• it doesn't evaporate

Which process is used to separate out dissolved solids, such as those found in inks?

• evaporation

• distillation

• chromatography

• filtration

Which process is used to separate liquids that have different boiling points?

• evaporation

• distillation

• chromatography

• filtration