Year 8 - Science
Chemical reactions: oxidation
Understanding chemical reactions
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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 covers the conservation of mass in changes of state and chemical reactions, including atom rearrangement. It also focuses on representing reactions with formulae and equations, exploring combustion, decomposition, and displacement, and distinguishing chemical from physical changes.
Lesson Summary
You will learn to describe oxidation reactions, including combustion and rusting, and name the products of some oxidation reactions.
Key Notes
- Combustion requires fuel, heat and oxygen, and will not happen without one of them.
- When a substance reacts to combine with oxygen, this is called oxidation.
- Examples of oxidation are combustion and rusting.
- One of the products of oxidation is always an oxide, but the other products vary.
Vocabulary To Learn
- oxidation: a type of reaction in which oxygen bonds to elements of the reactants
- oxide: a compound containing oxygen that is formed during an oxidation reaction
- rusting: refers to the corrosion of iron or steel, in the presence of water and oxygen
- corrosion: when a metal reduces in size due to a chemical reaction
Common Mistakes To Avoid
- Pupils often think that all metals rust.
3 Quick Questions (With Answers)
1. Explain the scientific idea in this lesson using two key points.
Combustion requires fuel, heat and oxygen, and will not happen without one of them. When a substance reacts to combine with oxygen, this is called oxidation.
2. Define this scientific word and use it in context. 'oxidation'
a type of reaction in which oxygen bonds to elements of the reactants. Include the word in a full scientific explanation, not as a single label.
3. Correct this common scientific misunderstanding.
Mistake: Pupils often think that all metals rust. Correction: Explain that rust is a form of iron oxide and show pupils other examples of metal oxides, e.g. copper oxide, to show how different they are.
More Lessons In This Unit
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