redox

Oxidation is the _________ of electrons.

• loss

• gain

• sharing

• transfer

Reduction is the ___________ of electrons.

• loss

• gain

• sharing

• transfer

What is the oxidation number of nitrogen in N₂?

• -3

• 0

• +4

• -1

What element is being Oxidized?

• N
• H
• O
• S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What element is being Reduced?

• N
• H
• O
• S

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

• Oxidized
• Reduced
• Neutralized
• Precipitated

Tags

NGSS.HS-PS1-2

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

• Increased
• Decreased
• Remained Constant
• Varies Randomly

Tags

NGSS.HS-PS1-2

Gaining oxygen is an example of...

• oxidation

• reduction

Which of the following represents oxidation?

• C → CH₄

• Fe³⁺ → Fe²⁺

• Cl₂ → 2Cl^-

• Zn → ZnO

Which of the following represents reduction?

• C →  CO
• N₂ →  NH₃
• Zn  →   Zn²⁺ 
• H₂ →  H₂O