Oxidation/Reduction

During the process of reduction, _________________

• protons are lost.

• protons are gained.

• electrons are lost.

• electrons are gained

• neutrons are lost.

Tags

NGSS.HS-PS1-2

The change of I^‾ to I₂ is ________________

• oxidation

• reduction

• neutralization

• Decomposition

• Combustion

What is the oxidation number of Nitrogen in HNO₃

• -7

• -5

• +5

• +7

• +2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Find the oxidation number of S in S₂O₄ ^2-

• +3

• +6

• -6

• -3

• -4

Tags

NGSS.HS-PS1-2

Identify the species reduced in the following reaction.

Fe_(s) + 2 Ag⁺_(aq) → Fe²⁺_(aq) + 2 Ag_(s)

• Fe

• Ag

• none of these

• None of the above

Tags

NGSS.HS-PS1-2

Determine the oxidation number of chromium in CrO₄^2-.

• 5

• 6

• 4

• 2

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which statement is true:

Mg → Mg²⁺ + 2e^–

• Mg gains 2 electrons

• Mg²⁺ loses 2 electron

• Mg loses 1 electron

• Mg loses 2 electrons

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

What is the oxidation number of: Br₂?

• -1

• +1

• -2

• 0

What is the oxidation number of Sr⁺²?

• -2

• 0

• +2

• +1

Which of the following would be considered oxidized in the following reaction:
 $2\ Li\ +\ ZnCl_{2_{ }}\rightarrow\ 2\ LiCl\ +\ Zn$   

• Li

• Zn

• Cl

• None of the elements were oxidized

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2