1. What simple change could be made to a reaction to speed it up dramatically?

Question 1 of 15

2. What is a catalyst?

Question 2 of 15

3. With how much energy must two particles collide for a reaction to occur?

Question 3 of 15

4. What is meant by the term activation energy?

Question 4 of 15

5. What type of substance speeds up a chemical reaction but is chemically unchanged at the end of the reaction?

Question 5 of 15

6. Calcium carbonate reacts with an excess of hydrochloric acid in a flask. The mass of flask and contents decreases over time as the carbon dioxide escapes. This is shown on the graph. How would the graph look different if the reaction was done with a lower concentration of hydrochloric acid?

Question 6 of 15

7. Give a simple reaction can be used to investigate the effect of changing surface area on the rate of reaction

Question 7 of 15

8. Explain how a catalyst works

Question 8 of 15

9. Explain the effects of increasing the pressure of gases on the rate of a reaction in terms of particle collision theory

Question 9 of 15

10. The reaction between magnesium and hydrochloric acid was used to measure the rate of reaction at different temperatures. Name 4 things which should be kept constant.

Question 10 of 15

11. What happens to the rate of reaction if a catalyst is added?

Question 11 of 15

12. Explain the effects of increasing the surface area of a solid on the rate of a reaction in terms of particle collision theory

Question 12 of 15

13. Give a simple reaction can be used to investigate the effect of changing concentration on the rate of reaction

Question 13 of 15

14. Write the word equation for the decompostion of hydrogen peroxide, H₂O₂

Question 14 of 15

15. Write the chemical equation for the decompostion of hydrogen peroxide, H₂O₂

Question 15 of 15


 

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