Review Questions - Chemical Reactions Chapter 11

  1. The starting substances in a chemical reaction
  2. An equation that does not indicate the relative amounts of reactants and products
  3. A → in the reaction means______.
  4. The symbol (aq) stands for ______.
  5. A substance that speeds up the reaction but is not used up in the reaction.
  6. The small whole numbers that are used in front of formulas to balance the equation.
  7. Answer the following questions using this equation: AgNO3 + H2S → Ag2S + HNO3
  8. What type of reaction is this equation?
  9. Balance the equation.
  10. Balance the following equation: FeCl3 + NaOH → Fe(OH)3 + NaCl
  11. Which product in 8 is the most likely precipitate?
  12. A chemical change in which two or more substances form a single new substance.
  13. A chemical change in which one element replaces a second element in a compound.
  14. A table that lists metals in order of decreasing reactivity.
  15. In order for a metal to replace another in a reaction, the metal must be ______on the chart.
  16. CaCO3 →
  17. What is the type of reaction?
  18. Write the products for the reaction.
  19. What are the three possible products in a double replacement reaction?
  20. The products of a combustion reaction are always ______.
  21. An ion that appears on both sides of an equation and is not directly involved in the reaction is called a ______.
  22. An equation for a reaction in solution that shows only those particles that are directly involved in the chemical change.
  23. Al + N2 →
  24. What is the type of reaction?
  25. Write the product(s)
  26. Balance the equation
  27. A reaction that releases energy is called ______.
  28. A reaction that takes in energy is an ______reaction.
  29. Energy is a ______(reactant or product) when energy is released?
  30. Cl2 + NaI →
  31. What type of reaction?
  32. Write the product(s)
  33. Balance the equation
  34. Finish the reaction: K + ______→ KOH + H2
  35. Finish the reaction: C2H5OH + ______→ CO2 + H2O

ANSWERS:

  1. reactant
  2. skeleton
  3. yields
  4. aqueous – dissolved in water
  5. catalyst
  6. coefficient
  7. a. double replacementb. 2 AgNO3 + H2S → Ag2S + 2 HNO3
  8. FeCl3 +3 NaOH → Fe(OH)3 +3 NaCl
  9. Fe(OH)3
  10. synthesis (combination)
  11. single replacement
  12. activity series
  13. higher
  14. a. decompositionb. CaO + CO2
  15. water, gas, ppt.
  16. carbon dioxide and water
  17. spectator ion
  18. net ionic equation
  19. a. synthesisb. AlNc. 2 Al + N2 → 2 AlN
  20. exothermic
  21. endothermic
  22. product
  23. a. single replacementb. I2 + NaClc. Cl2 + 2 NaI → I2 + 2 NaCl
  24. H2O
  25. O2