As an element is oxidized, its oxidation number

decreases as electrons are lost

increases as electrons are gained

decreases as electrons are gained

increases as electrons are lost

The third step in balancing the redox reaction using oxidation-number-change is

Use a line to connect the atoms that are undergoing a change in oxidation number.

Check the balancing for both atoms and charge.

Use coefficients to make the total increase in oxidation number equal to the total decrease in oxidation number.

Assign oxidation numbers to each of the atoms in the equation and write the numbers above the atom.

Which of the following reactions is an example of a redox reaction?

A) @@ ext{H}_2 + ext{Cl}_2 ightarrow 2 ext{HCl}@@

B) @@ ext{NaOH} + ext{HCl} ightarrow ext{NaCl} + ext{H}_2 ext{O}@@

C) @@ ext{AgNO}_3 + ext{NaCl} ightarrow ext{AgCl} + ext{NaNO}_3@@

D) @@ ext{CaCO}_3 ightarrow ext{CaO} + ext{CO}_2@@

Redox Reaction Oxidation Number

Quiz

•

Science

•

11th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-PS1-2, HS-PS1-1, HS-PS1-7

Standards-aligned

Lisa Thompson

Used 1+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If an atom loses electrons during a chemical reaction, the atom was:

Oxidized

Reduced

Neutralized

Precipitated

Tags

NGSS.HS-PS1-2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Oxidation is the _________ of electrons.

loss

gain

sharing

transfer

Tags

NGSS.HS-PS1-1

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What element is being Oxidized?

N

H

O

S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What element is being Reduced?

N

H

O

S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

is reduced

is oxidized

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Three reactions are shown below. NO+O₃ →NO₂ +O₂ 2C +O₂ → 2CO 2MgO+O₂ → 2MgO Which row correctly describes the process each reactant molecule undergoes?

A

B

C

D

Tags

NGSS.HS-PS1-2

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Lead(II) oxide undergoes a number of different redox reactions. In which of the following reactions is lead(II) oxide,PbO, not reduced?

A

B

C

D

Tags

NGSS.HS-PS1-7

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Redox Reaction Oxidation Number

25 questions

If an atom loses electrons during a chemical reaction, the atom was:

Oxidation is the _________ of electrons.

What element is being Oxidized?

What element is being Reduced?

Three reactions are shown below. NO+O₃ →NO₂ +O₂ 2C +O₂ → 2CO 2MgO+O₂ → 2MgO Which row correctly describes the process each reactant molecule undergoes?

Lead(II) oxide undergoes a number of different redox reactions. In which of the following reactions is lead(II) oxide,PbO, not reduced?

Magnesium reacts with iron(III) oxide in the following reaction.

Determine the oxidation number of the following element: Aluminum (Al)

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Similar Resources on Wayground

Popular Resources on Wayground

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Redox Reaction Oxidation Number

25 questions

If an atom loses electrons during a chemical reaction, the atom was:

Oxidation is the _________ of electrons.

What element is being Oxidized?

What element is being Reduced?

Three reactions are shown below. NO+O3 →NO2 +O2 2C +O2 → 2CO 2MgO+O2 → 2MgO Which row correctly describes the process each reactant molecule undergoes?

Lead(II) oxide undergoes a number of different redox reactions. In which of the following reactions is lead(II) oxide,PbO, not reduced?

Magnesium reacts with iron(III) oxide in the following reaction.

Determine the oxidation number of the following element: Aluminum (Al)

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

Three reactions are shown below. NO+O₃ →NO₂ +O₂ 2C +O₂ → 2CO 2MgO+O₂ → 2MgO Which row correctly describes the process each reactant molecule undergoes?