Do you know which factors affect the rate of reaction?
Topic Overview - Energy Changes and Rates of Reaction
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#1. Reaction profiles are used to show the energy transfers during reactions. Which type of reaction is shown in this reaction profile?
#2. When there are more frequent collisions between particles, what will happen to the rate of reaction?
#3. Will endothermic reactions continue if there is no energy input?
#4. Does increasing the pressure of gases increase the rate of reaction?
#5. In which type of reaction would the temperature of a solution increase?
#6. Temperature affects the rate of reaction. Which of the following is the correct description of what happens when temperature changes?
#7. Iron is turned into iron oxide when exposed to the air. This is a process also known as rusting. Is the rate of reaction fast or slow in rusting?
#8. Which type of reaction takes in energy, making the surroundings cooler?
#9. How could we accurately monitor the rate of a reaction? ? Three answers
Select all that apply:
#10. Why is there a minimum energy required for reactions to occur?
#11. Chemical reactions require a high enough collision energy for reactions to take place. What do we call the minimum amount of energy needed for a reaction?
#12. Which type of reaction transfers energy to the surroundings?
#13. Is it possible to control the rate of reaction?
#14. Energy is transferred between the environment and reactants during a chemical reaction. What form is this energy usually in?
#15. Neutralisation reactions which occur between an acid and a base are always:
#16. True or false - Precipitation reactions can either exothermic or endothermic.
#17. Surface area to volume ratio affects rate of reaction. Why is that the case?
#18. Which of these describes the term "rate of reaction"?
#19. In an experiment to measure the rate of photosynthesis of pondweed in a test tube, the number of bubbles (oxygen) produced per minute is used to determine the rate of reaction. What is this experiment actually measuring?
#20. Which type of reaction is aerobic respiration?
#21. Why is a spark often needed to start a combustion reaction?
#22. Which of these reasons explains why temperature affects rate of reaction?
#23. Displacement reactions sometimes occur between a metal and a compound of a less reactive metal. Are these reactions endothermic or exothermic?
#24. Which of the following are problems that would arise from measuring an extremely slow rate of reaction?
Select all that apply:
#25. Which of these is a fast reaction?
#26. Increasing the concentration of solutions increases the rate of reaction, why is this the case?
#27. Will exothermic reactions continue if there is no energy input?

#28. Reaction profiles are used to show the energy transfers during reactions. Which type of reaction is shown in this reaction profile?
#29. Which type of reaction is photosynthesis?
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