Filtration | Exit Quiz | Oak National Academy

What is the purpose of filtration?

• To dissolve solids in a liquid.

• To separate insoluble solids from a liquid.

• To change the chemical composition of a mixture.

• To increase the temperature of a mixture.

• To mix two liquids together.

Answer explanation

Filtration is used to separate insoluble solids from a liquid. The solid stays in the filter, while the liquid passes through.

What do we call the liquid that passes through the filter in filtration?

• residue

• component

• filtrate

• mixture

• solvent

Answer explanation

The liquid that passes through the filter is called the filtrate. It's separated from the solid residue.

What's the main difference between a funnel and a filter?

• A funnel separates materials; a filter does not.

• A funnel and a filter serve the same purpose.

• A funnel directs flow; a filter separates materials.

• A funnel increases mixture temperature; a filter does not.

• A funnel is used for heating; a filter is used for cooling.

Answer explanation

A funnel directs the flow of materials, while a filter separates materials based on particle size. They serve different purposes.

Place the steps of filtration in the correct order, starting with ensuring the mixture is thoroughly mixed.

• Wet the filter paper.

• Swirl the mixture in a flask.

• Pour the mixture into the filter paper.

• Collect the filtrate and residue.

Answer explanation

This sequence follows the logical steps of the filtration process.

Match each label to the correct part of the diagram.

• c

• residue

• a

• filtrate

• d

• filter paper

• b

• funnel

Answer explanation

The filter paper sits within the funnel. The insoluble solid collects in the filter paper as the residue, and the liquid passes through the small holes in the filter paper. The liquid collects in the flask as the filtrate.

In filtration, the smallest particles will become part of the ...

Answer explanation

The smaller particles pass through the filter and become the filtrate, while larger particles become residue.