Redox

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

• Oxidized

• Reduced

• Neutralized

• Precipitated

Tags

NGSS.HS-PS1-2

Oxidation is the _________ of electrons.

• loss

• gain

• sharing

• transfer

Tags

NGSS.HS-PS1-1

Reduction is the ___________ of electrons.

• loss

• gain

• sharing

• transfer

What element is being Oxidized?

• N

• H

• O

• S

Tags

NGSS.HS-PS1-2

In a redox reaction, what happens to the substance that is reduced?

• It gains electrons.

• It loses electrons.

• It gains oxygen.

• It loses hydrogen.

• is reduced

• is oxidized

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

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

What is the role of a reducing agent in a redox reaction?

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.

What is the role of an oxidising agent in a redox reaction?

• It donates electrons.

• It accepts electrons.

• It donates protons.

• It accepts protons.