Yr10 Types of Reactions and Balancing

Which side of a chemical equation is the reactant side?

• Left (before the yields sign)
• Right (after the yields sign)

Si + S₈ →Si₂S₄

• Synthesis

• Decomposition

• Single replacement

• Double replacement

Pb(NO₃)₂ →PbO + NO₂ + O₂

• Synthesis

• Decomposition

• Single replacement

• Combustion

Always starts with a hydrocarbon that reacts with oxygen and produces carbon dioxide and water. 

• Decomposition
• Synthesis
• Combustion
• Single Replacement

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

• Combination/Synthesis

• Decomposition
• Single Displacement

• Double Displacement

What is decomposition?

• putting substances together
• breaking substances apart
• element displacing another element in a compound

• burning of a substance

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

• Decomposition
• Combustion
• Combination/Synthesis

• Single Displacement 

Two Reactants and One Product

• Decomposition
• Combination/Synthesis

• Combustion
• Single Displacement

Which of the following is the general formula for a decomposition reaction?

• A + B  → AB
• AB → A + B
• AB + C → AC + B
• AB + CD → AC + BD

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction