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Worksheet 35 . Topic 9
Set C: Factors that affect reaction rate Objective: To test your understanding of factors that affect
chemical reaction rates.
Each question below asked you to explain how a certain factor increases or decreases a reaction rate.
Explain clearly.
15. Explain, in term of collision, how increasing the concentration of reactants will increase reaction rate.
16. Explain, in terms of kinetic energy and collision, how decreasing temperature of a reaction will
decrease the rate of that reaction.
Teacher Preview Copy
17. Explain, in terms of concentration and collision, how increasing pressure of gaseous reactants will
increase the rate of the reaction.
18. Explain, in term of collision, how decreasing concentration of reactants will decrease the reaction rate.
Teacher Preview Copy
19. Explain, in terms of kinetic energy and collision, how increasing the temperature of a reaction will Need help? Study Book Pg 191 – 195 Set 5 - 13
increase the rate of that reaction.
20. Explain, in terms of collision, how increasing surface area of reacting solids causes an increase in
reaction rate.
21. Explain, in terms of activation energy, how a catalyst speeds up a reaction.
22. Explain why reactions of ionic solutions occur very fast.
23. Explain why reactions of molecular substances are generally very slow.
72 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
Set C: Factors that affect reaction rate Objective: To test your understanding of factors that affect
chemical reaction rates.
Each question below asked you to explain how a certain factor increases or decreases a reaction rate.
Explain clearly.
15. Explain, in term of collision, how increasing the concentration of reactants will increase reaction rate.
16. Explain, in terms of kinetic energy and collision, how decreasing temperature of a reaction will
decrease the rate of that reaction.
Teacher Preview Copy
17. Explain, in terms of concentration and collision, how increasing pressure of gaseous reactants will
increase the rate of the reaction.
18. Explain, in term of collision, how decreasing concentration of reactants will decrease the reaction rate.
Teacher Preview Copy
19. Explain, in terms of kinetic energy and collision, how increasing the temperature of a reaction will Need help? Study Book Pg 191 – 195 Set 5 - 13
increase the rate of that reaction.
20. Explain, in terms of collision, how increasing surface area of reacting solids causes an increase in
reaction rate.
21. Explain, in terms of activation energy, how a catalyst speeds up a reaction.
22. Explain why reactions of ionic solutions occur very fast.
23. Explain why reactions of molecular substances are generally very slow.
72 Copyright © 2010 E3 Scholastic Publishing. All Rights Reserved. Survivingchem.com
