Oxidation & Reduction in Terms of Electrons (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Flashcards
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Redox reaction
Redox reaction
Transfer of electrons between substances
Oxidation (in terms of electrons)
Oxidation (in terms of electrons)
Loss of electrons
Effect of oxidation on oxidation state
Effect of oxidation on oxidation state
It increases
Reduction (in terms of electrons)
Reduction (in terms of electrons)
Gain of electrons
Effect of reduction on oxidation state
Effect of reduction on oxidation state
It decreases
In redox reactions, how do oxidation & reduction occur?
In redox reactions, how do oxidation & reduction occur?
Always occur together
Na in Na + Cl₂ → NaCl reaction
Na in Na + Cl₂ → NaCl reaction
Oxidised (loses electrons)
Cl in Na + Cl₂ → NaCl reaction
Cl in Na + Cl₂ → NaCl reaction
Reduced (gains electrons)
Na oxidation state before reaction
Na oxidation state before reaction
Na oxidation state in NaCl
Na oxidation state in NaCl
Cl₂ oxidation state before reaction
Cl₂ oxidation state before reaction
Cl oxidation state in NaCl
Cl oxidation state in NaCl
Oxidation state
Oxidation state
Number of electrons an atom has gained or lost
Identifying redox reactions
Identifying redox reactions
Change in oxidation state