Oxidation & Reduction in Terms of Electrons (AQA GCSE Chemistry Combined Science): Flashcards

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Oxidation & Reduction in Terms of Electrons
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Redox reaction involves

Transfer of electrons between substances

Oxidation in terms of electrons

Loss of electrons

When oxidation occurs, oxidation state

Increases

Reduction in terms of electrons

Gain of electrons

When reduction occurs, oxidation state

Decreases

Oxidation & reduction in redox reactions

Always occur together

Oxidation state represents

Total electrons an atom has gained or lost

How to identify a redox reaction

Change in oxidation state of elements

Na + Cl2Cl_2 reaction: sodium is

Oxidised (loses electrons)

Na oxidation state change in Na + Cl2Cl_2

00 to +1+1

Na + Cl2Cl_2 reaction: chlorine is

Reduced (gains electrons)

Cl oxidation state change in Na + Cl2Cl_2

00 to −1-1

Explore AQA GCSE Chemistry Combined Science Revision Notes by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

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Reactivity of Metals

Reactions of Acids

Electrolysis

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Reactivity of Metals

Reactions of Acids

Electrolysis

Explore AQA GCSE Chemistry Combined Science Exam Questions by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

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