Chapter 2 Atoms, Molecules, and Ions

1
Chapter 2Atoms, Molecules, and Ions

• Chemistry, The Central Science, 10th edition
• Theodore L. Brown H. Eugene LeMay, Jr.
• and Bruce E. Bursten

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?

1. Pb, 207.2 g/mol
2. Au, 197 g/mol
3. Ag, 107.9 g/mol
4. Cu, 63.54 g/mol
5. Fe, 55.85 g/mol

3
If you have equal masses of the following metals,
which will have the largest number of atoms?

1. Pb, 207.2 g/mol
2. Au, 197 g/mol
3. Ag, 107.9 g/mol
4. Cu, 63.54 g/mol
5. Fe, 55.85 g/mol

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

1. 1
2. 2
3. 3
4. 4
5. 5

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

1. 1
2. 2
3. 3
4. 4
5. 5

6
Which molar mass will be most common among Cl2
molecules?

1. 70 g/mol
2. 71 g/mol
3. 72 g/mol
4. 73 g/mol
5. 74 g/mol

7
Which molar mass will be most common among Cl2
molecules?

1. 70 g/mol
2. 71 g/mol
3. 72 g/mol
4. 73 g/mol
5. 74 g/mol

8
Which of the following are have the same number
of electrons (isoelectronic)?
9
Which of the following are have the same number
of electrons (isoelectronic)?
10
Which combination is likely to produce an ionic
compound?

1. C and H
2. S and Cl
3. Ca and F
4. Br and I
5. Xe and F

11
Which combination is likely to produce an ionic
compound?

1. C and H
2. S and Cl
3. Ca and F
4. Br and I
5. Xe and F

12
What are the ions present in the
compound(NH4)2SO4 ?

1. NH3, H2, and SO2
2. N3-, H, S2-, O2-
3. NH42 and SO4-
4. NH4 and SO42-
5. (NH4)2 and SO42-

13
What are the ions present in the
compound(NH4)2SO4 ?

1. NH3, H2, and SO2
2. N3-, H, S2-, O2-
3. NH42 and SO4-
4. NH4 and SO42-
5. (NH4)2 and SO42-