Year 5 - Science
Soluble and insoluble
Properties, changes and separating materials
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This pupil-friendly study guide includes a unit summary, clear notes, common mistakes, and quick questions with answers.
Unit Summary
This unit explores the properties of everyday materials, including hardness, solubility, and conductivity. It covers reversible changes like dissolving and mixing, and irreversible changes such as burning. Emphasis is on scientific enquiries, data recording, and presenting findings with evidence.
Lesson Summary
You will learn to compare materials based on whether they are soluble or not.
Key Notes
- Some solids dissolve in liquids to form a solution.
- Solutions are always clear, though they may or may not have a colour.
- When a solid dissolves, it is broken down to become so tiny we can no longer see it, but it is still there.
- A substance that dissolves is said to be soluble.
- A substance that does not dissolve is said to be insoluble.
Vocabulary To Learn
- dissolve: If a solid dissolves in a liquid, it mixes so completely with the liquid that it cannot be seen.
- solid: A solid keeps its shape and volume.
- liquid: A liquid can flow and take the shape of the bottom of its container.
- soluble: A material that will dissolve is soluble.
- insoluble: A material that will not dissolve is insoluble.
Common Mistakes To Avoid
- Dissolving is the same as melting.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Some solids dissolve in liquids to form a solution. Solutions are always clear, though they may or may not have a colour.
2. Define this scientific word and use it in context. 'dissolve'
If a solid dissolves in a liquid, it mixes so completely with the liquid that it cannot be seen. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Dissolving is the same as melting. Correction: Teaching slides explain the difference between melting and dissolving.
More Lessons In This Unit
- Bioplastics (non-statutory Climate Change & Sustainability) Study Guide
- Burning plants as fuel (non-statutory Climate Change & Sustainability) Study Guide
- Burning: an irreversible change Study Guide
- Everyday uses of thermal insulators Study Guide
- Greenhouse gases (non-statutory Climate Change & Sustainability) Study Guide
- How scientists work Study Guide
- Insulating our homes and schools (non-statutory Climate Change & Sustainability) Study Guide
- More irreversible changes Study Guide
- More reversible changes Study Guide
- Properties of materials Study Guide
- Providing safe drinking water (non-statutory Climate Change & Sustainability) Study Guide
- Recovering insoluble solids Study Guide
- Removing salt from seawater (non-statutory) Study Guide
- Reversible changes of state Study Guide
- Rusting: an irreversible change Study Guide
- Separating soluble solids from solutions Study Guide
- Thermal insulators: do and review Study Guide
- Thermal insulators: plan Study Guide
- Uses of everyday materials Study Guide
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