GCSE Chemistry – Oxidation and reduction

Last updated: 13/04/2020
Edexcel International GCSE Science – Chemistry separate Inorganic Chemistry GCSE Chemistry – Oxidation and reduction

Learning Objectives

-I can describe reduction
-I can describe oxidation as the loss of electrons
-I can describe reduction as a gain of electrons
-I can write balanced ionic half equations
-I can determine which element in a reaction is oxidised or reduced from the equation

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  1. Current
  2. Review
  3. Answered

  1. What is the definition of oxidation?

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  2. What is the definition of oxidation?

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  3. What is the definition of oxidation?

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  4. What is gained during oxidation?

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  5. What is lost during oxidation?

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  6. What is the definition of reduction?

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  7. What is the definition of reduction?

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  8. What is the definition of reduction?

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  9. What is gained during reduction?

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  10. What is lost during reduction?

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  11. What expression can be used to work out if an element has been oxidised or not?

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  12. What expression can be used to work out if an element has been reduced or not?

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  13. What does ‘OIL’ stand for?

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  14. What does ‘RIG’ stand for?

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  15. What is the definition of an ionic equation?

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  16. What is looked at during an ionic equation?

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  17. What is looked at during an ionic equation?

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  18. Here is an ionic equation Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s), what is the ionic half equation for calcium?

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  19. Here is an ionic equation Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s), what is the ionic half equation for magnesium?

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  20. Which element has been oxidised in the following reaction? Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s)

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  21. Which element has been reduced in the following reaction? Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s)

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  22. Which element has lost electrons in the following reaction? Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s)

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  23. Which element has gained electrons in the following reaction? Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s)

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  24. How many electrons has calcium lost during this reaction? Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s)

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  25. How many electrons has magnesium gained during this reaction? Ca(s) + Mg2+^{2+}(aq) -> Ca2+^{2+}(aq) + Mg(s)

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