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Half Equations

Authored by Lisa Thompson

Science

8th Grade

NGSS covered

Half Equations
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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the half equation:

Cu --> Cu2+ + 2e-

Copper undergoes...

Spectatorship

Reduction

Deprotonation

Oxidation

Tags

NGSS.HS-PS1-7

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the half equation: @@ ext{Zn} ightarrow ext{Zn}^{2+} + 2e^-@@, zinc undergoes...

Spectatorship

Reduction

Deprotonation

Oxidation

Tags

NGSS.HS-PS1-2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following is a correct half equation for the reduction of copper ions?

@@ ext{Cu}^{2+} + 2e^- ightarrow ext{Cu}@@

@@ ext{Cu} ightarrow ext{Cu}^{2+} + 2e^-@@

@@ ext{Cu}^{+} + e^- ightarrow ext{Cu}@@

@@ ext{Cu} ightarrow ext{Cu}^{+} + e^-@@

Tags

NGSS.HS-PS1-7

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the half equation: @@ ext{Fe}^{3+} + e^- ightarrow ext{Fe}^{2+}@@, iron is...

Oxidized

Reduced

Neutralized

Hydrated

Tags

NGSS.HS-PS1-2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of the following represents the oxidation of hydrogen gas?

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

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

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

@@ ext{H}_2 ightarrow ext{H}_2^+ + e^-@@

Tags

NGSS.HS-PS1-7

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In the half equation: @@ ext{Cl}_2 + 2e^- ightarrow 2 ext{Cl}^-@@, chlorine is...

Oxidized

Reduced

Dissolved

Evaporated

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which half equation correctly represents the reduction of oxygen gas?

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

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

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

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

Tags

NGSS.HS-PS1-2

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