Introduction to Rate Laws
Explore the fundamentals of chemical reaction rates and rate laws for Grade 9 science students.
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Introduction to Rate Laws
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Read each question carefully and answer to the best of your ability. Show all your work for calculations.
1. What does the 'rate' of a chemical reaction refer to?
The amount of product formed.
How fast reactants are consumed or products are formed.
The energy change during a reaction.
The type of chemical bonds involved.
2. Which of the following factors generally increases the rate of a chemical reaction?
Decreasing temperature
Decreasing reactant concentration
Increasing surface area of solid reactants
Removing a catalyst
3. A is a substance that increases the rate of a chemical reaction without being consumed in the reaction.
4. The rate law expresses the relationship between the rate of a reaction and the of the reactants.
5. Increasing the temperature always decreases the rate of a chemical reaction.
True
False
6. The rate constant (k) in a rate law is dependent on temperature.
True
False
7. For the reaction A + B → C, if doubling the concentration of A doubles the reaction rate, and doubling the concentration of B has no effect on the reaction rate, what is the rate law for this reaction?
Match the term with its definition.
8. Reaction Rate
a. Equation relating reaction rate to reactant concentrations
9. Rate Law
b. A substance that speeds up a reaction
10. Catalyst
c. Speed at which reactants are converted to products
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