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

Question 1 of 15

2. What is meant by the term activation energy?

Question 2 of 15

3. Explain the effects of increasing the temperature on the rate of a reaction in terms of particle collision theory

Question 3 of 15

4. 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 4 of 15

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

Question 5 of 15

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

Question 6 of 15

7. Calcium carbonate reacts with an excess of hydrochloric acid in a flask. The volume of carbon dioxide given off is measured in a gas syringe. This is shown on the graph. How would the graph look different if the reaction was done with twice the volume of the acid?

Question 7 of 15

8. Explain how a catalyst works

Question 8 of 15

9. What happens to the rate of reaction if the temperature is INCREASED?

Question 9 of 15

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

Question 10 of 15

11. What is a catalyst?

Question 11 of 15

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

Question 12 of 15

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

Question 13 of 15

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

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