Recovering insoluble solids
I can describe how to separate an insoluble solid from a liquid.
Recovering insoluble solids
I can describe how to separate an insoluble solid from a liquid.
Lesson details
Key learning points
- Some solids do not dissolve in a liquid; these are called insoluble.
- A sieve is a type of filter that can be used to separate larger insoluble solids from a liquid.
- Different insoluble solids can be separated from a liquid (or gas) using different filters.
- Filters are used to separate solids and liquids in our everyday lives.
Common misconception
Insoluble and soluble solids are separated from liquids using the same methods. Dissolved solids, like salt and sugar, can be removed from solution by filtering.
Methods specific to the separation of insoluble solids are taught and applied in this lesson. Task A will help children understand that filtering does not separate dissolved solids, like salt and sugar, from solution.
Keywords
Dissolve - If a solid dissolves in a liquid, it mixes completely with the liquid so that it cannot be seen.
Insoluble - Solids and gases that do not dissolve in a liquid are insoluble.
Separate - To separate something, you put different parts of it into different groups.
Filter - To filter is to pour a mixture of liquid and solid through a fine mesh to separate the solid particles from the liquid.
Sieve - A sieve is a device with a mesh of holes to let small pieces through while holding back larger pieces.
Equipment
see additional materials
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
dissolves in water or another liquid
does not dissolve in water or another liquid
Exit quiz
6 Questions
