Separating an insoluble solid from a liquid
I can use my understanding of the properties of solids and liquids to work out how to separate some mixtures.
Separating an insoluble solid from a liquid
I can use my understanding of the properties of solids and liquids to work out how to separate some mixtures.
Lesson details
Key learning points
- Magnets attract iron and steel
- Insoluble solids can be separated from a liquid using a filter by a process known as filtration.
- Filter paper is folded to make a pocket that fits in a filter funnel for filtering fine particles
- A drop of water on a filter funnel helps keep the filter paper cone open for easy filtering
Common misconception
A funnel is the same as a filter. Dissolved substances will be collected in the filter paper.
A filter separates materials. Dissolved substances are smaller than the pores in the filter paper and so will pass through with the liquid.
Keywords
Filtration - a process that separates insoluble substances from a liquid using a filter
Filter paper - placed inside the filter funnel to separate the insoluble solid from the liquid in the mixture
Filter funnel - is cone-shaped with a tube, and is placed in the top of the conical flask when filtering.
Residue - the insoluble solid collected in the filter paper
Filtrate - the liquid separated from the insoluble solid
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
A substance which can dissolve in a liquid.
To divide something into its different parts.
A substance which cannot dissolve in a liquid.
Items needed to perform a task.
Exit quiz
6 Questions
The insoluble solid collected in the filter paper.
The liquid separated from the insoluble solid.
To physically divide different parts of a mixture.
Unable to dissolve in a liquid.
the teabag
the tea drink
the tea leaves
holes in the teabag
