Chemical Reactions Unit Review

Copper chloride (CuCl2) and aluminum react to produce aluminum chloride (AlCl3) and copper. Which of the following is the correctly balanced chemical equation for this reaction?

• CuCl₂ + Al → AlCl₃ + Cu

• 3CuCl₂ + Al→ AlCl₃ + 2Cu

• 3CuCl₂ + 2Al → 2AlCl₃ + 3Cu

• CuCl₂ + 3Al → AlCl₃ + 2Cu

Give the reactants in the following equation:

CH₄ + 2O₂ → CO₂ + H₂O

• CH₄ and CO₂

• 2O₂ and CO₂

• CH₄ and 2O₂

• 2O₂ and H₂O

Give the products in the following equation:

CH₄ + 2O₂ → CO₂ + H₂O

• CH₄ and CO₂

• 2O₂ and CO₂

• 2O₂ and H₂O

• CO₂ and H₂O

Is this equation balanced?

N₂ + 3H₂ → 2NH₃

• Yes - it is balanced

• No - it is not balanced

Is this equation balanced?

Mg + O₂ → MgO

• Yes - it is balanced

• No - it is not balanced

Tags

NGSS.MS-PS1-5

2 NaBr + 1 Ca(OH)₂ ----> 1 CaBr₂ + 2 NaOH

• Synthesis (or combination)

• Decomposition

• Single replacement

• Double replacement

• Combustion

2 NH₃+ 1 H₂SO₄ ----> 1 (NH₄)₂SO₄

• Synthesis (or combination)

• Decomposition

• Single replacement

• Double replacement

• Combustion

3 Pb + 2 H₃PO₄ ----> 3 H₂ + 1 Pb₃(PO₄)₂

• Synthesis (or combination)

• Decomposition

• Single replacement

• Double replacement

• Combustion

1 Li₃N + 3 NH₄NO₃ ----> 3 LiNO₃ + 1 (NH₄)₃N

• Synthesis (or combination)

• Decomposition

• Single replacement

• Double replacement

• Combustion

CaCO₃ ----> CaO + CO₂

• Synthesis (or combination)

• Decomposition

• Single replacement

• Double replacement

• Combustion