Chapter 10 Reading Guide                                                     Name ____________________________________


Section 10.1

  1. What are the two ways to measure the sand in a sand castle?
  2. What kinds of questions illustrate that chemistry is a quantitative science?
  3. What three ways can you measure matter?
  4. What can you use conversion factors for?
  5. Do Practice Problem 1 using conversion factors?
  6. Why is counting not practical?
  7. What is a mole?
  8. What is Avogadro’s number?
  9. What is a representative particle?
  10. What are the three types of representative particle?
  11. Write a conversion factor with representative particles in it.
  12. What do you need to know to determine the atoms in a mole?
  13. How big I a mole of moles?
  14. What is an atomic mass unit?
  15. Why do 12.0 g of carbon and 1.0 g of hydrogen have the same number of atoms?
  16. Why are atomic masses not whole numbers?
  17. What is the mass of a mole a mole of an element?
  18. What is another definition of a mole?
  19. How do you find the mass of a mole of SO3?
  20. How do you calculate molar mass of a compound?

Section 10.2

  1. What can you use the molar mass of a compound for?
  2. What relationship do you use for a conversion factor to turn grams into moles?
  3. Do Practice Problem 18.
  4. How do the volumes of a mole of liquid and gas compare?
  5. How are the volumes of gases different?
  6. What is Avogadro’s hypothesis?
  7. Why doesn’t the size of the particle matter?
  8. What is standard temperature and pressure?
  9. What is true about gases at STP?
  10. What do you use for a conversion factor for volume and moles?
  11. Do Practice Problem 20
  12. What decides whether a balloon will float?
  13. What units will the density of a gas be measured in?
  14. What equation will we use to relate molar mass and density?
  15. How is the mole road map used?


Section 10.3

  1. What is the percent composition?
  2. What do you use to calculate the mass of each element in a mole of a compound?
  3. What is the sum of these masses?
  4. How do you calculate the percent mass of each element in a compound?
  5. When does the percent composition of a compound change?
  6. What can you use the percent composition of a compound for?
  7. How do you do this?
  8. What doe the empirical formula give you?
  9. How is empirical formula related to the molecular formula?
  10. How is the molecular formula different from the empirical formula?
  11. How are the molar masses of compounds with the same empirical formula related?
  12. How doe scientists find the molar mass of a new compound?
  13. What is the empirical formula mass?
  14. How do you use the empirical formula mass?