Oxidation & Reduction in Terms of Electrons (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes

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Oxidation & Reduction in Terms of Electrons
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What is oxidation in terms of electrons?

Loss of electrons

What is reduction in terms of electrons?

Gain of electrons

What happens to oxidation state when a substance is oxidised?

It increases

What happens to oxidation state when a substance is reduced?

It decreases

In a redox reaction, if one substance is oxidised, what happens to another?

It is reduced

What is the oxidation state of sodium before reacting with chlorine?

0

What is the oxidation state of sodium in NaClNaCl?

+1

What is the oxidation state of chlorine in Cl2Cl_2 before reacting?

0

What is the oxidation state of chlorine in NaClNaCl?

-1

In the reaction 2Na+Cl2→2NaCl2Na + Cl_2 → 2NaCl, which element is oxidised?

Sodium

In the reaction 2Na+Cl2→2NaCl2Na + Cl_2 → 2NaCl, which element is reduced?

Chlorine

How can you identify if a redox reaction has occurred?

Change in oxidation state occurs

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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 OCR GCSE Chemistry A (Gateway Science Suite) Exam Questions by Topics

Reactivity of Metals

Reactions of Acids

Electrolysis

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