gaining electrons, losing oxygen

gaining electrons; gaining oxygen

losing electrons; losing oxygen

losing electrons; gaining oxygen

In a redox reaction, which of the following statements is true about the oxidizing agent?

A) It gains electrons and is reduced.

B) It loses electrons and is oxidized.

C) It gains protons and is oxidized.

D) It loses protons and is reduced.

Which of the following is an example of a reduction reaction?

C) @@ ext{O}_2 + 4 ext{e}^- ightarrow 2 ext{O}^{2-}@@

A) @@ ext{Fe}^{3+} + 3 ext{e}^- ightarrow ext{Fe}@@

B) @@ ext{Zn} ightarrow ext{Zn}^{2+} + 2 ext{e}^-@@

D) @@ ext{H}_2 ightarrow 2 ext{H}^+ + 2 ext{e}^-@@

In the context of redox reactions, what is the role of a catalyst?

C) It increases the rate of both oxidation and reduction.

A) It increases the rate of oxidation only.

B) It increases the rate of reduction only.

D) It decreases the rate of both oxidation and reduction.

Oxidation and Reduction

Quiz

•

Science

•

11th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-PS1-2, HS-PS1-7, MS-PS1-2

+1

Standards-aligned

Lisa Thompson

FREE Resource

15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In a reaction, copper is reduced; its number of electrons has:

Increased

Decreased

Remained Constant

Varies Randomly

In the reaction Zn + H₂O --> ZnO₂ + H₂
which element, if any, is oxidized?

Zinc

Hydrogen

Oxygen

None

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What substance is oxidized in the following reaction?
4Fe + 3O₂ --> 2Fe₂O₃

Iron

Fluorine

Oxygen

________________ is the gain of oxygen atoms.

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

________________ is the loss of oxygen atoms.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Is this an oxidation or reduction reaction?
water → hydrogen + oxygen

Oxidation

Reduction

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which element has been reduced?

iron

lithium

oxide

iron oxide

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Oxidation and Reduction

15 questions

In a reaction, copper is reduced; its number of electrons has:

In the reaction Zn + H₂O --> ZnO₂ + H₂
which element, if any, is oxidized?

What substance is oxidized in the following reaction?
4Fe + 3O₂ --> 2Fe₂O₃

________________ is the gain of oxygen atoms.

________________ is the loss of oxygen atoms.

Is this an oxidation or reduction reaction?
water → hydrogen + oxygen

Which element has been reduced?

Reduction involves

Which substance is reduced in the following reaction?
NaOH + Li --> LiOH + Na

What is happening to the chemical in bold?
Aluminium oxide --> aluminium + oxygen

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Oxidation and Reduction

15 questions

In a reaction, copper is reduced; its number of electrons has:

In the reaction Zn + H2O --> ZnO2 + H2 which element, if any, is oxidized?

What substance is oxidized in the following reaction?4Fe + 3O2 --> 2Fe2O3

________________ is the gain of oxygen atoms.

________________ is the loss of oxygen atoms.

Is this an oxidation or reduction reaction?water → hydrogen + oxygen

Which element has been reduced?

Reduction involves

Which substance is reduced in the following reaction? NaOH + Li --> LiOH + Na

What is happening to the chemical in bold?Aluminium oxide --> aluminium + oxygen

Access all questions and much more by creating a free account

Similar Resources on Wayground

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Discover more resources for Science

In the reaction Zn + H₂O --> ZnO₂ + H₂
which element, if any, is oxidized?

What substance is oxidized in the following reaction?
4Fe + 3O₂ --> 2Fe₂O₃

Is this an oxidation or reduction reaction?
water → hydrogen + oxygen

Which substance is reduced in the following reaction?
NaOH + Li --> LiOH + Na

What is happening to the chemical in bold?
Aluminium oxide --> aluminium + oxygen