Essential Chemistry for IGCSE - Chemical Reactions (Section 2 - No. 22)
Which of the following statements correctly describes oxidation?
It is the gain of electrons by a substance.
It is the loss of electrons by a substance.
It is the gain of hydrogen by a substance.
It is the loss of hydrogen by a substance.
Explanation
Oxidation is the loss of electrons, gain of oxygen, or loss of hydrogen.
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