1. 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 1 of 15

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

Question 2 of 15

3. What is a catalyst?

Question 3 of 15

4. What is meant by the term activation energy?

Question 4 of 15

5. 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 5 of 15

6. What reactant is used to produce a sample of oxygen in the lab?

Question 6 of 15

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

Question 7 of 15

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

Question 8 of 15

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

Question 9 of 15

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

Question 10 of 15

11. State 5 ways in which the rate of reaction could be increased

Question 11 of 15

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

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. Explain how a catalyst works

Question 14 of 15

15. Explain the effects of increasing the concentration of solutions on the rate of a reaction in terms of particle collision theory

Question 15 of 15


 

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