Oxidation and Reduction

Oxidation involves

• gaining electrons; gaining oxygen

• losing electrons; losing oxygen

• gaining electrons; losing oxygen

• losing electrons; gaining oxygen

Identify the oxidising agent in the reaction between copper(II) oxide and hydrogen.

• CuO

• H₂

• Cu

• H₂O

Oxidation is the _________ of electrons.

• loss

• gain

• sharing

• transfer

Tags

NGSS.HS-PS1-1

Reduction is the ___________ of electrons.

• loss

• gain

• sharing

• transfer

Tags

NGSS.HS-PS1-7

Gaining hydrogen is an example of...

• oxidation

• reduction

Tags

NGSS.HS-PS1-2

Gaining oxygen is an example of...

• oxidation

• reduction

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

• Increased

• Decreased

• Remained Constant

• Varies Randomly

Tags

NGSS.HS-PS1-2

Reduction involves 

• gaining electrons; gaining oxygen

• losing electrons; losing oxygen

• gaining electrons, losing oxygen

• losing electrons; gaining oxygen

Tags

NGSS.HS-PS1-7

Identify the substance that is reduced in the reaction between hydrogen and iron(II) oxide.

• H₂

• FeO

• H₂O

• Fe

Tags

NGSS.HS-PS1-2

Identify the substance that is oxidised in the reaction between carbon and zinc oxide.

C + 2ZnO → CO₂ + 2Zn

• C

• ZnO

• CO₂

• Zn