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

The sum of the oxidation numbers in SCN^- is equivalent to

• 0

• -1

• +1

• +3

The sum of the oxidation numbers in Na₂CO₃ is equivalent to

• 0

• -2

• +1

• -1

Tags

NGSS.HS-PS1-1

What is the oxidation number of iodine in KIO₃?

• 0

• -1

• +5

• +1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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-PS1-2

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

• Oxidized
• Reduced
• Neutralized
• Precipitated

Tags

NGSS.HS-PS1-2

In the reaction
2Ca(s) + O₂(g) --> 2CaO(s), calcium is __________

• Reduced
• Synthesized
• Oxidized
• None of the above

Tags

NGSS.HS-PS1-2