G6: Revision Questions (Types of Reaction (Unit-5))

Indicate whether they are synthesis, decomposition, or combustion reactions.

2C₃H₆(g) + 9O₂(g) --> 6CO₂(g) + 6H₂O(g)

What types of chemical reaction is this?

4Si + S₈ --> 2Si₂S₄

• Double displacement

• Single displacement

• Decomposition

• Synthesis

Indicate whether they are synthesis, decomposition, or combustion reactions.

NH₄NO₃(s) --> N₂O(g) + 2H₂O(g)

What types of chemical reaction is this?

3KOH + H₃PO₄ --> K₃PO₄ + 3H₂O

• Synthesis

• Single displacement

• Decomposition

• Double displacement

What types of chemical reaction is this?

3Ca + 2AlCl₃ --> 3CaCl₂ + 2Al

• Synthesis

• Single displacement

• Decomposition

• Double displacement

Indicate whether they are synthesis, decomposition, or combustion reactions.

C₅H₆O(l) + 6O₂(g) --> 5CO₂(g) + 3H₂O(g)

Indicate whether they are synthesis, decomposition, or combustion reactions.

K₂O(s) + H₂O(l) --> 2KOH(aq)

Indicate whether they are synthesis, decomposition, or combustion reactions.

N₂(g) + 3H₂(g) --> 2NH₃(g)

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

• A + B  → AB

• AB + C → AC + B

• AB → A + B

• AB + CD → AC + BD

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

• A + B  → AB

• AB + C → AC + B

• AB → A + B

• AB + CD → AC + BD