Crystallisation
I can explain the process of crystallisation and how it is used to separate substances.
Crystallisation
I can explain the process of crystallisation and how it is used to separate substances.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Crystallisation is a technique that is used to separate a soluble solute from a solution.
- Crystallisation involves the formation of a saturated solution and temperature differences.
- Crystallisation results in the loss of the solvent to the surroundings.
Keywords
Saturated solution - A saturated solution is one in which no more solute can dissolve in the solvent at a given temperature.
Crystallisation - Crystallisation is a process that forms solid crystals from a saturated solution by continued removal of the solvent (e.g. evaporation).
Soluble - When a substance dissolves in a liquid, it is described as soluble in that liquid.
Solvent - A solvent is a liquid into which a solute dissolves.
Common misconception
Pupils sometimes use the terms evaporation and boiling interchangeably, but they are not the same.
Boiling: a liquid substance is heated and gas bubbles form. Evaporation: same, BUT only on the surface of the liquid, no bubbles form and the gas mixes with air.
To help you plan your year 10 chemistry lesson on: Crystallisation, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 chemistry lesson on: Crystallisation, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 4 chemistry lessons from the Separating substances unit, dive into the full secondary chemistry curriculum, or learn more about lesson planning.
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Adult supervision required
Licence
Starter quiz
6 Questions
When a solid can dissolve in a liquid.
When a solid cannot dissolve in a liquid.
The mixture formed when a solid dissolves in a liquid.
When no more solid can dissolve.