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Quiz: Oxidation vs. Reduction

Authored by Silvia Alvarez Villa

Chemistry

11th Grade

Used 19+ times

Quiz: Oxidation vs. Reduction
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15 questions

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1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Choose the correct terms to complete the sentences.

In the reaction Fe(s) + S(s) → FeS(s), the oxidizing agent is  _________ because it   ____________ electrons.

Iron … accepts

Sulfur … accepts

Iron … give up

Sulfur … give up

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Choose the correct terms to complete the sentences.

In the reaction Fe(s) + S(s) → FeS(s), The reducing agent is  _________ because it   ____________ electrons.

Iron … accepts

Sulfur … accepts

Iron … give up

Sulfur … give up

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Select the option that best describes the following chemical reaction:NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)

It is a non-redox reaction in which the elements retain their oxidation numbers throughout the reaction.

It is a redox reaction in which the elements retain their oxidation numbers throughout the reaction.

It is a non-redox reaction in which the oxidation numbers of the elements change.

It is a redox reaction in which the oxidation numbers of the elements change.

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Mark is carrying out an experiment in the lab. He has a beaker of copper sulfate solution, and he places a coil of aluminum in it (Left image).He leaves it for some time. He observes that the solution has turned colorless and there are brown deposits on the aluminum coil (Right image).

Which chemical equation represents the chemical change that has occurred in the experiment?

2Al(s) + 3CuSO4(aq) → Al2(SO4)3(aq) + 3Cu(s)

2Al(s) + 3CuSO4(aq) → Al2(SO4)3(aq) + 3Cu(aq)

2Al(s) + 3CuSO4(aq) → Al2(SO4)3(s) + 3Cu(aq)

2Al(s) + 3CuSO4(aq) → Al2(SO4)3(s) + 3Cu(s)

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The sum of the oxidation numbers in a neutral compound is always

a negative number

a positive number

zero

one

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Elements in the first column of the periodic table are known as alkali metals. These elements, when ionized, have in common:

an oxidation number of 1-

an oxidation number of 1+

an oxidation number of 2-

an oxidation number of 2+

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In the reaction shown below, which substance is reduced?

3 Na(s) + AlCl3(aq) → 3 NaCl(aq) + Al(s)

Na(s) → NaCl(aq)

AlCl3(aq) → Al(s)

Na(s) → Al(s)

AlCl3(aq) → NaCl(aq)

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