Year 5 - Science
Separating soluble solids from solutions
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 describe how to separate a soluble solid from a solution.
Key Notes
- A solid that dissolves in a liquid is called soluble. This makes a solution.
- Soluble solids can not be recovered using filtering.
- Soluble solids can be recovered from a liquid using evaporation.
- Evaporation is when a liquid changes to invisible water vapour (gas) in the air.
Vocabulary To Learn
- dissolve: If a solid or gas dissolves in a liquid, it mixes so completely with the liquid that it cannot be seen.
- soluble: Solids and gases that dissolve in a liquid are soluble.
- solution: A solution is a mixture of a liquid with a dissolved solid or gas.
- separate: To separate something, you put different parts of it into different groups.
- evaporate: To evaporate is to change from a liquid to a gas.
Common Mistakes To Avoid
- A dissolved solid ceases to be present in the solution it forms – it turns into water. When you pass salt water through a filter paper, the salt is removed.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
A solid that dissolves in a liquid is called soluble. This makes a solution. Soluble solids can not be recovered using filtering.
2. Define this scientific word and use it in context. 'dissolve'
If a solid or gas 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: A dissolved solid ceases to be present in the solution it forms – it turns into water. When you pass salt water through a filter paper, the salt is removed. Correction: Children carry out practical activities to discover which methods can and cannot be used to recover salt from a solution.
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
- Soluble and insoluble Study Guide
- Thermal insulators: do and review Study Guide
- Thermal insulators: plan Study Guide
- Uses of everyday materials Study Guide
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