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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What effect does increasing concentration have on reaction rates?
💡 Hint: Think about how many particles are present.
Question 2
Easy
Define a catalyst in the context of chemical reactions.
💡 Hint: What do we call substances that help speed up reactions?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the effect of increasing the temperature on the rate of a reaction?
- Decreases the rate
- Has no effect
- Increases the rate
💡 Hint: Consider what happens to particles when they get more heat.
Question 2
True or False: Catalysts are consumed in the reactions they catalyze.
- True
- False
💡 Hint: Think about what happens to a catalyst after it speeds up a reaction.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculating the effect of a catalyst: A reaction without a catalyst takes 20 minutes. With a catalyst, it was seen to take only 5 minutes. How much faster did the reaction occur?
💡 Hint: Think about how many times faster the reaction was in comparison.
Question 2
Analyzing a reaction: If you double the concentration of a reactant in a second-order reaction, how does it affect the rate?
💡 Hint: Consider the power to which concentration is raised in the rate equation.
Challenge and get performance evaluation