Activation Energy Worksheet
Explore the concept of activation energy, catalysts, and reaction rates with this Grade 9 science worksheet.
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Activation Energy: Understanding Chemical Reactions
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Read each question carefully and answer to the best of your ability. Show all work where applicable.
1. What is activation energy?
The energy released during a chemical reaction.
The minimum energy required to start a chemical reaction.
The energy stored in the chemical bonds of reactants.
The energy of the products after a reaction.
2. How does a catalyst affect activation energy?
It increases activation energy.
It decreases activation energy.
It has no effect on activation energy.
It changes the products of the reaction.
3. The higher the activation energy, the the reaction rate.
4. A substance that speeds up a chemical reaction without being consumed is called a .
5. All chemical reactions require activation energy to occur.
True
False
6. Increasing the temperature of reactants generally decreases the rate of reaction.
True
False
7. Explain the role of activation energy in an exothermic reaction.
8. Describe two ways to increase the rate of a chemical reaction, relating your answer to activation energy.