Chemical Reactions Worksheet
Grade 11 Science worksheet covering types of chemical reactions, balancing equations, and factors affecting reaction rates.
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Chemical Reactions Worksheet
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Read each question carefully and answer to the best of your ability. Show all work for calculations.
1. Which of the following is NOT a characteristic of a chemical reaction?
Formation of a new substance
Change in state (e.g., solid to liquid)
Release or absorption of energy
Rearrangement of atoms
2. What type of reaction is represented by the equation: A + BX → AX + B?
Synthesis
Decomposition
Single displacement
Double displacement
3. A catalyst works by lowering the of a chemical reaction.
4. In an exothermic reaction, heat is to the surroundings.
5. The law of conservation of mass states that matter cannot be created or in a chemical reaction.
6. Balance the following chemical equation:
Fe + O₂ → Fe₂O₃
7. List three factors that can affect the rate of a chemical reaction.
8. All chemical reactions involve a change in temperature.
True
False
9. A precipitate is a solid product formed from a reaction in solution.
True
False
Match the type of reaction with its description.
10. Synthesis
a. One element replaces another in a compound.
11. Decomposition
b. Two or more reactants combine to form a single product.
12. Single Displacement
c. A single compound breaks down into two or more simpler substances.
Observe the image below, which depicts a thermite reaction.
13. What evidence of a chemical reaction can be observed in the image?