Edexcel IGCSE Chemistry 2.20 Oxidation & reduction
Practise redox explanations using oxygen transfer, electron transfer and the roles of oxidising and reducing agents.
- Syllabus
- First assessment 2019
- Course
- Chemistry 4CH1
Exam points
- explain redox by pairing oxidation with reduction in the same equation
- identify electron loss or gain for ions in an ionic equation
- link oxidising and reducing agents to oxygen transfer or electron transfer
2.20 Oxidation and reduction question 1
[Maximum number: 1]
This question is about magnesium metal and its compounds.
Magnesium burns in oxygen gas to form solid magnesium oxide.
Give a reason why magnesium is oxidised in this reaction.
magnesium gains oxygen
Allow:
- magnesium loses electrons
Ignore:
- magnesium reacts with oxygen
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