Potential Energy Diagrams Worksheet
Explore potential energy diagrams, activation energy, and reaction pathways for chemical reactions at a Grade 9 level.
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Topics
Potential Energy Diagrams
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Read each question carefully and answer to the best of your ability. Refer to the potential energy diagram provided for questions when necessary.
Refer to the potential energy diagram below for questions 1-3.
1. What does the highest point on the potential energy diagram represent?
Reactants
Products
Transition State
Activation Energy
2. What is the overall change in potential energy for the reaction shown in the diagram?
Positive (Endothermic)
Negative (Exothermic)
Zero
Cannot be determined
3. The energy required to initiate a chemical reaction is called .
4. In an exothermic reaction, the products have potential energy than the reactants.
5. A catalyst increases the activation energy of a reaction.
True
False
6. Endothermic reactions absorb energy from their surroundings.
True
False
7. Briefly explain the difference between an endothermic and an exothermic reaction in terms of potential energy diagrams.