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CH 8: Review Game Chemical Reactions

CH 8: Review Game Chemical Reactions. frame : picture :: water :. island peninsula lake reservoir. Response Grid. Which of the following is not a sign that a chemical reaction has occurred?. Heat Light Odor given off Gas produced Precipitate formed Color change. Response Grid. 15.

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CH 8: Review Game Chemical Reactions

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  1. CH 8: Review GameChemical Reactions

  2. frame : picture :: water : • island • peninsula • lake • reservoir Response Grid

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

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

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

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

  7. Participant Scores

  8. Energy Diagram for Reactions B A

  9. What percentage of your current points would you like to wager on the next question? • 0% • 25% • 50% • 75% • 100% Response Grid

  10. Which energy diagram represented an endothermic reaction? • A • B • Both • Neither Response Grid 15 Countdown

  11. Energy Diagram for a Reaction A ?

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

  13. Energy Diagram for Reactions B a b

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

  15. Energy Diagram for Reactions B A

  16. Participant Scores

  17. What percentage of your current points would you like to wager on the next question? • 0% • 25% • 50% • 75% • 100% Response Grid

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

  19. Which of the following is the general equation for single displacement reactions? • A + X  AX • AX  A + X • A + BX  AX + B • AX + BY  AY + BX • AX + O2  AO + XO Response Grid 20 Countdown

  20. Which of the following is the general equation for double displacement reactions? • A + X  AX • AX  A + X • A + BX  AX + B • AX + BY  AY + BX • AX + O2  AO + XO Response Grid 15 Countdown

  21. Which of the following is the general equation for decomposition reactions? • A + X  AX • AX  A + X • A + BX  AX + B • AX + BY  AY + BX • AX + O2  AO + XO Response Grid 15 Countdown

  22. Which of the following is the general equation for combustion reactions? • A + X  AX • AX  A + X • A + BX  AX + B • AX + BY  AY + BX • AX + O2  AO + XO Response Grid 15 Countdown

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

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

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

  26. Participant Scores

  27. What percentage of your current points would you like to wager on the next question? • 0% • 25% • 50% • 75% • 100% Response Grid

  28. Which of the following is not one of the diatomic elements? • H • C • N • O • F • Cl • Br • I Response Grid 15 Countdown

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

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

  31. Participant Scores

  32. What percentage of your current points would you like to wager on the next question? • 0% • 25% • 50% • 75% • 100% Response Grid

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

  34. Participant Scores

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