- Year 10
- AQA
Filtration
I can describe how to carry out filtration and explain how it works.
Lesson details
Key learning points
- Filtration is a technique used to separate insoluble substances from a mixture with a liquid.
- Separation in filtration occurs due to the difference in size of particles.
- The terms 'filtrate' and 'residue' describe the components separated by the process of filtration.
Keywords
Filtration - Filtration is a technique to separate insoluble solids from a liquid by passing the mixture it is in through a filter.
Filtrate - A filtrate is the liquid component separated from a mixture as a result of filtration.
Residue - The insoluble component collected in the filter paper as a result of filtration is called the residue.
Component - A component refers to a part of something, e.g. a tyre on a car.
Common misconception
A funnel is the same as a filter.
A funnel streamlines movement, while a filter separates materials. Use everyday examples to highlight the difference, e.g. an oil funnel vs. an oil filter, or a coffee funnel vs. a coffee filter.
Equipment
See additional material.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
Lesson video
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Prior knowledge starter quiz
6 Questions
Q1.Which substances are insoluble (do not dissolve) in water?
Q2.A is a material that contains two or more different substances, which can be physically separated.
Q3.What mixture is formed when a substance dissolves in a liquid?
Q4.Match the following words to their meaning.
Q5.Which of the following are mixtures?
Q6.When a solid substance is insoluble, it can still form a mixture with a liquid. This mixture is called a ...
Assessment exit quiz
6 Questions
Q1.What is the purpose of filtration?
Q2.What do we call the liquid that passes through the filter in filtration?
Q3.What's the main difference between a funnel and a filter?
Q4.Place the steps of filtration in the correct order, starting with ensuring the mixture is thoroughly mixed.
Q5.Match each label to the correct part of the diagram.
