Unit 6 Review

Is the following equation balanced?

4Fe + 3O₂ ---> 2Fe₂O₃

• YES

• NO

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

2 NH₃+ 1 H₂SO₄ ----> 1 (NH₄)₂SO₄

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

CaCO₃ ----> CaO + CO₂

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

Pb + FeSO₄ ----> PbSO₄ + Fe

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

Na₃PO₄ + 3 KOH ----> 3 NaOH + K₃PO₄

• Synthesis (or combination)
• Decomposition
• Single displacement
• Double displacement

• Combination

• Decomposition

• Single Replacement

• Double Replacement

• Combustion

___C₃H₈ +___O₂ --> ___CO₂ + ___H₂O

• 1,5,3,4
• 2,10,6,8
• already balanced
• 1,5,5,4

__Na + __Cl₂ --> __NaCl

• 1,1,2
• 2,1,2
• 2,1,1
• already balanced

__(NH₄)₃PO₄ + __Pb(NO₃)₄ --> __Pb₃(PO₄)₄ + __NH₄NO₃

• 2,1,1,6
• 1,2,2,3
• 4,3,1,12
• 4,2,1,12