1. CH 8: Review Game Chemical Reactions

2. frame : picture :: water : 1.island 2.peninsula 3.lake 4.reservoir Response Grid

3. Which of the following is not a sign that a chemical reaction has occurred? Countdown 15 Response Grid 1.Heat 2.Light 3.Odor given off 4.Gas produced 5.Precipitate formed 6.Color change

4. How do you know for sure that a chemical reaction has occurred? Countdown 15 Response Grid 1.More than 1 sign is evident 2.More than 2 signs are evident 3.The properties change 4.A new substance forms

5. Which is not true during a chemical reaction? Countdown 15 Response Grid 1.Energy is created. 2.Mass is conserved. 3.Atoms are rearranged. 4.Electrons are moved around. 5.Activation energy is absorbed.

6. Energy is released when bonds _________ but absorbed when bonds _________. Countdown 15 Response Grid 1.Form; break 2.Break; form

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8. Energy Diagram for Reactions A B

9. What percentage of your current points would you like to wager on the next question? 1.0% 2.25% 3.50% 4.75% 5.100% Response Grid

10. Which energy diagram represented an endothermic reaction? Countdown 15 Response Grid 1.A 2.B 3.Both 4.Neither

11. Energy Diagram for a Reaction A ?

12. What does the line on the graph in the previous slide represent? Countdown 15 Response Grid 1.The reactants 2.The products 3.The activation energy 4.The conservation of mass 5.The energy given off

13. Energy Diagram for Reactions B a b

14. Section “a” of the graph represents bonds ________ while section “b” represents bonds ________. Countdown 15 Response Grid 1.Forming; breaking 2.Breaking; forming

15. Energy Diagram for Reactions A B

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17. What percentage of your current points would you like to wager on the next question? 1.0% 2.25% 3.50% 4.75% 5.100% Response Grid

18. Which is not a factor that can affect the rate of a reaction? Countdown 15 Response Grid 1.Temperature 2.Concentration 3.Surface area 4.Catalyst 5.Activation energy

19. Which of the following is the general equation for single displacement reactions? Countdown 20 Response Grid 1.A + X  AX 2.AX  A + X 3.A + BX  AX + B 4.AX + BY  AY + BX 5.AX + O 2  AO + XO

20. Which of the following is the general equation for double displacement reactions? Countdown 15 Response Grid 1.A + X  AX 2.AX  A + X 3.A + BX  AX + B 4.AX + BY  AY + BX 5.AX + O 2  AO + XO

21. Which of the following is the general equation for decomposition reactions? Countdown 15 Response Grid 1.A + X  AX 2.AX  A + X 3.A + BX  AX + B 4.AX + BY  AY + BX 5.AX + O 2  AO + XO

22. Which of the following is the general equation for combustion reactions? Countdown 15 Response Grid 1.A + X  AX 2.AX  A + X 3.A + BX  AX + B 4.AX + BY  AY + BX 5.AX + O 2  AO + XO

23. What are the products of a combustion reaction involving a hydrocarbon? Countdown 15 Response Grid 1.Oxygen and water 2.An acid and a base 3.Carbon dioxide and water vapor 4.A precipitate

24. Why must a chemical equation be balanced? Countdown 15 Response Grid 1.To even everything out 2.So you know how much of each substance is needed 3.To satisfy conservation of mass

25. Which numbers can you adjust to balance a chemical equation? Countdown 15 Response Grid 1.Subscripts 2.Coefficients

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27. What percentage of your current points would you like to wager on the next question? 1.0% 2.25% 3.50% 4.75% 5.100% Response Grid

28. Which of the following is not one of the diatomic elements? Countdown 15 Response Grid 1.H 2.C 3.N 4.O 5.F 6.Cl 7.Br 8.I

29. What symbol do you use if a reaction is heated? Countdown 15 Response Grid 1.(s) 2.(aq) 3.Δ 4.↑ 5.↓

30. When do you use the activity series? Countdown 15 Response Grid 1.For double displacement reactions 2.For single displacement reactions 3.For exothermic reactions 4.For all reacations

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32. What percentage of your current points would you like to wager on the next question? 1.0% 2.25% 3.50% 4.75% 5.100% Response Grid

33. How do you determine if a precipitate will form in a reaction? Countdown 15 Response Grid 1.Use the activity series 2.Use the periodic table 3.Use the solubility rules 4.Guess

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