GCSE Chemistry – Activation energy
Learning Objectives
-I can describe how a catalyst lowers activation energy
-I can draw an energy profile diagram for a catalysed and an uncatalysed reaction
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Question 1 of 25
1. Question
What is the definition of activation energy?
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Question 2 of 25
2. Question
What is the definition of a catalyst?
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Question 3 of 25
3. Question
What does a catalyst do to the activation energy of a reaction?
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Question 4 of 25
4. Question
Which has a higher activation energy, an uncatalysed reaction or a catalysed reaction?
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Question 5 of 25
5. Question
Which has a lower activation energy, an uncatalysed reaction or a catalysed reaction?
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Question 6 of 25
6. Question
What is the definition of a energy profile diagram?
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Question 7 of 25
7. Question
What lies on the x axis of an energy profile diagram?
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Question 8 of 25
8. Question
What lies on the y axis of an energy profile diagram?
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Question 9 of 25
9. Question
What type of line should be drawn to show the activation energy on an energy profile diagram?
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Question 10 of 25
10. Question
When drawing the activation energy on an energy profile diagram, where should the line start from?
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Question 11 of 25
11. Question
When drawing the activation energy on an energy profile diagram, where should the line end?
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Question 12 of 25
12. Question
What should be drawn on an energy profile diagram to show activation energy?
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Question 13 of 25
13. Question
When drawing an arrow on an energy profile diagram to show the activation energy, which way should the arrow be drawn?
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Question 14 of 25
14. Question
For an uncatalysed reaction, which has more energy the reactants or products?
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Question 15 of 25
15. Question
For an uncatalysed reaction, which has less energy the reactants or products?
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Question 16 of 25
16. Question
Which of the following best describes the place for the activation energy on an energy profile diagram for an uncatalysed reaction?
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Question 17 of 25
17. Question
For an uncatalysed reaction, explain where the reactants will fall on an energy profile diagram compared to the products.
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Question 18 of 25
18. Question
For an uncatalysed reaction, explain where the products will fall on an energy profile diagram compared to the reactants.
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Question 19 of 25
19. Question
For a catalysed reaction, which has more energy the reactants or products?
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Question 20 of 25
20. Question
For a catalysed reaction, which has less energy the reactants or products?
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Question 21 of 25
21. Question
Which of the following best describes the place for the activation energy on an energy profile diagram for a catalysed reaction?
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Question 22 of 25
22. Question
For a catalysed reaction, explain where the reactants will fall on an energy profile diagram compared to the products.
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Question 23 of 25
23. Question
For a catalysed reaction, explain where the products will fall on an energy profile diagram compared to the reactants.
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Question 24 of 25
24. Question
When drawing an energy profile diagram, which reaction will have a higher curved line drawn to signify its activation energy an uncatalysed reaction or a catalysed reaction?
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Question 25 of 25
25. Question
When drawing an energy profile diagram, which reaction will have a lower curved line drawn to signify its activation energy an uncatalysed reaction or a catalysed reaction?
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