Final Exam Review 2

When does a chemical reaction stop?

• When the lab is finished

• When the excess reactant is used up

• When the limiting reactant is used up

• Chemical reactions never stop

Which of the following shows the correct way to balance the chemical equation?
Fe + O₂ -> Fe₂O₃

• 4Fe + 3O₂ -> 2Fe₂O₃
• 2 Fe + 3O₂ -> Fe₂O₆
• 4 Fe + O₆ -> 2Fe₂O₃
• None of the options are correctly balanced.

What happens in ALL chemical changes?

• Change in state of matter
• A new substance is formed
• Bubbles are produced
• An explosion

Which type of chemical reaction is defined by this equation: AB --> A + B

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Which type of chemical reaction is defined by this equation: AB + C --> A + CB

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Which type of chemical reaction is defined by this equation:

AB + CD --> AD + CB

• Synthesis

• Decomposition

• Single Displacement

• Double Displacement

What type of chemical reaction is this equation: 2H₂O → 2H₂+ O₂

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Which type of chemical reaction is defined by this equation: A + B --> AB

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

What type of chemical reaction is this equation: AgNO₃+ KI → KNO₃+ AgI

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Which type of chemical reaction is this equation: N₂ + 3H₂→ 2NH₃

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement