Oxidation and Reduction

Oxidation involves

• gaining electrons; gaining oxygen

• losing electrons; losing oxygen

• gaining electrons; losing oxygen

• losing electrons; gaining oxygen

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-PS1-2

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

C + 2ZnO → CO₂ + 2Zn

• C

• ZnO

• CO₂

• Zn

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

H₂ + FeO → H₂O + Fe

• H₂

• FeO

• H₂O

• Fe

Identify the substance that is oxidised in the reaction between aluminium and chromium(III) ion.

Al + Cr³⁺ → Al³⁺ + Cr

• Al

• Cr³⁺

• Al³⁺

• Cr

Identify the substance that is reduced in the reaction between copper(II) ion and magnesium.

Cu²⁺ + Mg → Cu + Mg²⁺

• Cu²⁺

• Mg

• Cu

• Mg²⁺

Tags

NGSS.HS-PS1-2

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

CuO + H₂ → Cu + H₂O

• CuO

• H₂

• Cu

• H₂O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify the reducing agent in the reaction between sulfuric acid and zinc.

H₂SO₄ + Zn → H₂ + ZnSO₄

• H₂SO₄

• Zn

• H₂

• ZnSO₄

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Identify the oxidising agent in the reaction between iron(II) chloride and zinc.

2FeCl₃ + 3Zn → 2Fe + 3ZnCl₂

• FeCl₃

• Zn

• Fe

• ZnCl₂

Identify the reducing agent in the reaction between aluminium and iron(III) oxide.

Al + Fe₂O₃ → Al₂O₃ + Fe

• Al

• Fe₂O₃

• Al₂O₃

• Fe