Reactions Review

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

• Combination/Synthesis

• Decomposition
• Single Displacement

• Double Displacement

The following is what type of reaction:
NH₃ + HCl  → NH₄Cl

• Combination/Synthesis

• Decomposition
• Single Displacement

• Double Displacement

What type of chemical reaction is this?
Al(OH)₃ → Al₂O₃  + H₂O

• Decomposition
• Combustion
• Combination/Synthesis

• Single Displacement 

3Ca + 2AlCl₃ --> 3CaCl₂ + 2Al

• Synthesis
• Decomposition
• Single Displacement
• Double Displacement

4Si   + S₈   -->   2Si₂S₄

• Combination/Synthesis

• Decomposition
• Single Displacement
• Double Displacement

3KOH + H₃PO₄ --> K₃PO₄ + 3H₂O

• Combination/Synthesis

• Decomposition
• Single displacement
• Double displacement

What is the conservation of matter?

• A place to preserve wildlife

• A non-liberal person

• Matter cannot be created or destroyed

• An object at rest stays at rest unless acted upon by an unbalanced force

PCl₅ +H₂O --> POCl₃ +HCl. How many chlorine (Cl) atoms?

• Reactants: 5; Products: 3

• Reactants 5; Products 5

• Reactants 5: Products 4

• Reactants 3; Products 5

Which option is correctly balanced?

• Fe + H₂O --> Fe₃O₄ + H₂

• 3 Fe + H₂O --> Fe₃O₄ + H₂

• 3 Fe + 4 H₂O --> Fe₃O₄ + 4 H₂

• 3 Fe + 2 H₂O --> Fe₃O₄ + H₂

Which Option is Correctly Balanced?

• Hg + O₂ --> Hg₂O₂

• 2 Hg + 2O₂ --> Hg₂O₂

• 2 Hg + O₂ --> Hg₂O₂

• Hg + 2 O₂ --> Hg₂O₂