Separation Techniques and Hydrogen Quiz

What method is used to separate a solid that has dissolved in a liquid?

• Filtration

• Distillation

• Evaporation

• Freezing

What method separates liquids with different boiling points?

• Filtration

• Distillation

• Decanting

• Melting

Fill in the gap: Distillation separates mixtures based on their ______ points.

Which technique uses heat to separate substances?

• Filtration

• Sieving

• Evaporation

• Freezing

What is left behind after evaporation?

• The solvent

• The gas

• The solute

• The mixture

Which method can you use to separate oil and water?

• Filtering

• Using a magnet

• Decanting

• Boiling

What is chromatography used for?

• Filtering solids

• Heating mixtures

• Separating colours

• Burning metals

Fill in the gap: ______ is used to separate mixtures of coloured dyes or inks.

Which mixture can be separated by sieving?

• Saltwater

• Pebbles and sand

• Ink and water

• Oil and water

What is the purpose of a magnet in separation?

• To clean materials

• To boil mixtures

• To attract magnetic materials

• To measure temperature