January 2023

Experiment: Reducing Copper oxide with carbon

By |2022-09-15T12:39:34+02:00January 24th, 2023|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes: Experiment: Reducing Copper oxide with carbon

Aim: To reduce copper oxide with carbon

Materials: black copper oxide, tongs, crucible lid, powdered carbon, burner

Carbon can be used to reduce copper oxide Carbon can be used to reduce copper oxide

Method

  1. Mix the copper oxide and powdered carbon together in the crucible […]
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Differences between reduction and oxidation

By |2022-09-15T12:39:32+02:00January 24th, 2023|Notes, O Level Science Notes, Ordinary Level Notes|

ZIMSEC O Level Combined Science Notes: Differences between reduction and oxidation

  • There are differences between oxidation and reduction
  • The table below shows the differences between oxidation and reduction:
  • Often reduction and oxidation occur in conjunction
  • That is at the same time and during the same reaction
  • For example:
  • \text{ammonia+oxygen}\rightarrow\text{water+nitrogen dioxide}
  • Nitrogen gains oxygen and losses hydrogen […]
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