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

Question 2 of 15

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

Question 3 of 15

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

Question 4 of 15

5. 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 at a higher temperature?

Question 5 of 15

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

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 concentration on the rate of reaction

Question 8 of 15

9. What is a catalyst?

Question 9 of 15

10. State the catalyst used for making oxygen through the decomposition of hydrogen peroxide

Question 10 of 15

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

Question 11 of 15

12. What is meant by the term activation energy?

Question 12 of 15

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

Question 13 of 15

14. What happens if two particles collide with less than the activation energy

Question 14 of 15

15. Explain how a catalyst works

Question 15 of 15


 

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