1. Chapter 2 Atoms, Molecules, and Ions
Chemistry, The Central Science, 10th edition
Theodore L. Brown; H. Eugene LeMay, Jr.;
and Bruce E. Bursten
Chapter 2 Atoms, Molecules, and Ions
Donna Narsavage Heald
Siena College
Loudonville, NY
 2006, Prentice Hall

2. If you have equal masses of the following metals, which will have the largest number of atoms?
Pb, g/mol
Au, 197 g/mol
Ag, g/mol
Cu, g/mol
Fe, g/mol

3. If you have equal masses of the following metals, which will have the largest number of atoms?
Pb, g/mol
Au, 197 g/mol
Ag, g/mol
Cu, g/mol
Fe, g/mol

4. The mass spectrum of chlorine is shown below
The mass spectrum of chlorine is shown below. How many different molar masses are possible for Cl2? 1 2 3 4 5

5. The mass spectrum of chlorine is shown below
The mass spectrum of chlorine is shown below. How many different molar masses are possible for Cl2? 1 2 3 4 5

6. Which molar mass will be most common among Cl2 molecules?
70 g/mol
71 g/mol
72 g/mol
73 g/mol
74 g/mol

7. Which molar mass will be most common among Cl2 molecules?
70 g/mol
71 g/mol
72 g/mol
73 g/mol
74 g/mol

8. Which of the following are have the same number of electrons (isoelectronic)?5. 1. 2. 3. 4.
None of the above

9. Which of the following are have the same number of electrons (isoelectronic)?5. 1. 2. 3. 4.
None of the above

10. Which combination is likely to produce an ionic compound?
C and H
S and Cl
Ca and F
Br and I
Xe and F

11. Which combination is likely to produce an ionic compound?
C and H
S and Cl
Ca and F
Br and I
Xe and F

12. What are the ions present in the compound (NH4)2SO4 ?
NH3, H2, and SO2
N3-, H+, S2-, O2-
NH42+ and SO4-
NH4+ and SO42-
(NH4+)2 and SO42-

13. What are the ions present in the compound (NH4)2SO4 ?
NH3, H2, and SO2
N3-, H+, S2-, O2-
NH42+ and SO4-
NH4+ and SO42-
(NH4+)2 and SO42-