Name:  __________________________
10-1 Review and Reinforcement
Chemical Measurments
Define each of the following terms in complete sentences.
1.mole ____________________________________________________________________________
_____________________________________________________________________________.

2. formula mass _____________________________________________________________________
______________________________________________________________________________.

3. formula unit ______________________________________________________________________
_______________________________________________________________________________.

4. Avogadro's number ________________________________________________________________
_______________________________________________________________________________.

5. molar mass _______________________________________________________________________
_______________________________________________________________________________.



If the statement is true, write "true." If it is false, change the undrlined word or words to make it true.


________________6. The atomic mass of an atom is based on a comparisono with the mass of                                            sulfer-32.

________________7. A mole of any element contains 6.02 x 10^23 atoms.

________________8. A mole of an ionic compound contains 6.02 x 10^23 molecules.

________________ 9. The molar mass of a substance in grams is always equal to the formula                                              mass in amu.

________________ 10. One mole of HNO3 contains 3 atoms of oxygen.



Find the formula mass of each of the following compounds. Show all your work.

11. CaCO3



12. MgSO4



13. NaOH



14. KCl



15. BaF2


  Find the molar mass of each of the following compounds. Show all your work.



16. nitric acid (HNO3)



17. ammonia (NH3)



18. calcium sulfate (CaSO4)



19. potassium sulfide (K2S)



20. iron (III) chloride (FeCl3)