Practice Presence Of A Catalyst (2.4) - Rate of Reactions - IB 10 Sciences (Group 4)

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10 questions

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6 sample questions

Question 1.
What is a catalyst?
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Think about roles in reactions.
Question 2.
Give an example of a catalyst.
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Consider chemicals used to speed up reactions.
3Question 3.
What does a catalyst do in a chemical reaction?
- Increases the reaction time
- Decreases the activation energy
- Is consumed in the reaction
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Consider what happens to energy barriers.
4Question 4.
True or False: Catalysts are consumed during reactions.
- True
- False
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Think about the lifecycle of a catalyst.
Question 5.
Given a reaction that has a high activation energy, what would be the impact of introducing a catalyst? Discuss its effects on reaction rate and the energy profile of the reaction.
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Think about the energy graph and how catalysts change it.
Question 6.
Evaluate the role of catalysts in environmental chemistry, particularly in processes such as catalytic converters in cars. How do they contribute to reducing emissions?
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Consider the direct effects on vehicle emissions and the environment.

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