Name: 
 

Chapter 2 Part 1 Self Quiz



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Which of the following statements concerning Marie Curie are correct?

1.
Marie Curie isolated polonium and radium.
2.
Marie Curie discovered that uranium emits neutrons when it decays.
3.
Marie Curie suggested that certain atoms disintegrate, emitting unusual rays. She named the phenomenon radioactivity.
a.
1 only
b.
2 only
c.
3 only
d.
1 and 2
e.
1 and 3
 

 2. 

What is the atomic symbol for an element that has 30 neutrons and a mass number of 55?
a.
Cs
b.
At
c.
Zn
d.
Hg
e.
Mn
 

 3. 

Which of the following atoms contains the largest number of protons?
a.
158Gd
b.
157Tb
c.
127I
d.
138Ba
e.
144Nd
 

 4. 

Which of the following atoms contains the largest number of neutrons?
a.
ch2_files/i0050000.jpg
b.
ch2_files/i0050001.jpg
c.
ch2_files/i0050002.jpg
d.
ch2_files/i0050003.jpg
e.
ch2_files/i0050004.jpg
 

 5. 

Silver has an average atomic mass of 107.87 u. If 48.18% of Ag exists as Ag-109 (108.9047 u), what is the identity and the atomic mass of the other isotope?
a.
Ag-106; 106.9 u
b.
Ag-107; 106.9 u
c.
Ag-107; 107.9 u
d.
Ag-108; 107.9 u
e.
Ag-108; 108.9 u
 

 6. 

Lithium has two stable isotopes with masses of 6.01512 u and 7.01600 u. The average molar mass of Li is 6.941 u. What is the percent abundance of each isotope?
a.
7.49% Li-6 and 92.51% Li-7
b.
9.18% Li-6 and 90.813% Li-7
c.
12.2% Li-6 and 87.78% Li-7
d.
50.00% Li-6 and 50.00% Li-7
e.
62.99% Li-6 and 37.01% Li-7
 

 7. 

What is the mass of 0.25 mol Zn?
a.
3.8 × 10-3 g
b.
0.061 g
c.
7.3 g
d.
16 g
e.
2.6 × 102 g
 

 8. 

The molar mass of carbon is 12.01 g/mole. What is the mass of a 1.0 × 109 carbon atoms?
a.
1.4 × 10-16 g
b.
2.0 × 10-14 g
c.
1.2 × 10-8 g
d.
8.3 × 107 g
e.
7.2 × 1015 g
 

 9. 

All of the following are possible quantities EXCEPT
a.
a gold coin with a mass of 0.0031 kg.
b.
aluminum foil that is 2.0 × 10-2 cm thick.
c.
2.0 × 10-22 grams He.
d.
1.0 × 10-24 mol C.
e.
22 atoms of Bi.
 

 10. 

Four elements constitute over 95% of the human body. These four elements are
a.
iron, calcium, carbon, and sodium.
b.
phosphorus, carbon, nitrogen, and sodium.
c.
sodium, calcium, carbon, and iron.
d.
magnesium, oxygen, nitrogen, and hydrogen.
e.
oxygen, carbon, hydrogen, and nitrogen.
 



 
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