1. The atomic number indicates __________.
A. the number of neutrons in a nucleus
B. the total number of neutrons and protons in
a nucleus
C. the number of protons in a neutral atom
D. the number of atoms in 1 g of an element
1. The atomic number indicates __________.
A. the number of neutrons in a nucleus
B. the total number of neutrons and protons in
a nucleus
C. the number of protons in a neutral atom
D. the number of atoms in 1 g of an element
2. Who is responsible for discovering the
neutron?
A. Rutherford
B. Chadwick
C. Thomson
D. None of the above
2. Who is responsible for discovering the
neutron?
A. Rutherford
B. Chadwick
C. Thomson
D. None of the above
3. In the symbol, x 6C, x is __________.
A. the number of neutrons
B. the atomic number
C. the mass number
D. the isotope number
3. In the symbol, x 6C, x is __________.
A. the number of neutrons
B. the atomic number
C. the mass number
D. the isotope number
4. Which scientist’s form of organizing the
periodic table was called the “Law of
Octaves”?
A. Mendeleev
B. Moseley
C. Dobereiner
D. Newlands
4. Which scientist’s form of organizing the
periodic table was called the “Law of
Octaves”?
A. Mendeleev
B. Moseley
C. Dobereiner
D. Newlands
5. Which isotope has 45 neutrons?
A.
80
B.
80
36Kr
35Br
C. 7834Se
D.
34
17Cl
5. Which isotope has 45 neutrons?
A.
80
36Kr
B.
80 Br
35
C. 7834Se
D.
34
17Cl
6. A sample of element X contains 90% X-35
atoms, 8.0% X-37 atoms, and 2.0% X-38
atoms. The average atomic mass will be
closest to which value?
a. 35
c. 37
b. 36
d. 38
6. A sample of element X contains 90% X-35
atoms, 8.0% X-37 atoms, and 2.0% X-38
atoms. The average atomic mass will be
closest to which value?
a. 35
c. 37
b. 36
d. 38
7. The size of an element’s atomic radius
__________ from left to right across the
periodic table.
a. increases
b. decreases
c. remains constant
d. is randomly assigned
7. The size of an element’s atomic radius
__________ from left to right across the
periodic table.
a. increases
b. decreases
c. remains constant
d. is randomly assigned
8. Arrange the following elements from lowest
to highest ionization energy: Be, Mg, Ca, Rb,
Sr
a. Be, Mg, Ca, Rb, Sr
b. Rb, Sr, Ca, Be, Mg
c. Rb, Sr, Ca, Mg, Be
d. Be, Mg, Ca, Sr, Rb
8. Arrange the following elements from lowest
to highest ionization energy: Be, Mg, Ca, Rb,
Sr
a. Be, Mg, Ca, Rb, Sr
b. Rb, Sr, Ca, Be, Mg
c. Rb, Sr, Ca, Mg, Be
d. Be, Mg, Ca, Sr, Rb
9. How many electrons are in an Iron atom?
A. 23
B. 26
C. 27
D. 28
9. How many electrons are in an Iron atom?
A. 23
B. 26
C. 27
D. 28
10. An iron atom has an atomic mass of 56. Its
atomic number is 26. How many neutrons
does the iron atom have?
a. 30
b. 56
c. 26
d. 82
10. An iron atom has an atomic mass of 56. Its
atomic number is 26. How many neutrons
does the iron atom have?
a. 30
b. 56
c. 26
d. 82
11. In the Plum Pudding Model, the plums are
_________, while the pudding is
___________.
a. positive, negative
b. negative, positive
c. positive, positive
d. negative, negative
11. In the Plum Pudding Model, the plums are
_________, while the pudding is
___________.
a. positive, negative
b. negative, positive
c. positive, positive
d. negative, negative
12. Clorine (Cl) is best described as a
a. Nonmetal
b. Metalloid
c. Metal
d. Semimetal
12. Clorine (Cl) is best described as a
a. Nonmetal
b. Metalloid
c. Metal
d. Semimetal
13. All atoms of an element have the same
a. number of neutrons
b. atomic number
c. atomic mass
d. mass number
13. All atoms of an element have the same
a. number of neutrons
b. atomic number
c. atomic mass
d. mass number
14. An element consists of two isotopes. The
abundance of one isotope is 95.72% and its
atomic mass is 114.9041. The atomic mass of
the second isotope is 112.9043. What is the
average atomic mass of the element?
a. 113.9
b. 113.0
c. 112.9
d. 114.8
14. An element consists of two isotopes. The
abundance of one isotope is 95.72% and its
atomic mass is 114.9041. The atomic mass of
the second isotope is 112.9043. What is the
average atomic mass of the element?
a. 113.9
b. 113.0
c. 112.9
d. 114.8
15. How many protons are in the nucleus of an
atom of beryllium?
a. 2
b. 9
c. 4
d. 5
15. How many protons are in the nucleus of an
atom of beryllium?
a. 2
b. 9
c. 4
d. 5
16. Of Fe, K, P, and Cl, which would you
expect to have the greatest electron affinity?
a. K
b. Fe
c. Cl
d. P
16. Of Fe, K, P, and Cl, which would you
expect to have the greatest electron affinity?
a. K
b. Fe
c. Cl
d. P
17. What scientists is called the ‘Father of the
Periodic Table”?
a. Moseley
b. Rutherford
c. Millikan
d. Mendeleev
17. What scientists is called the ‘Father of the
Periodic Table”?
a. Moseley
b. Rutherford
c. Millikan
d. Mendeleev
18. What do Lithium and Berrylium have in
common?
a. In the same group
b. In the same period
c. Same number of electrons
d. Same number of protons
18. What do Lithium and Berrylium have in
common?
a. In the same group
b. In the same period
c. Same number of electrons
d. Same number of protons
19. Which symbols represent atoms that are
isotopes?
a. C-14 and N-14
b. O-16 and O-18
c. I-131 and I-131
d. Rn-222 and Ra-222

19. Which symbols represent atoms that are
isotopes?
a. C-14 and N-14
b. O-16 and O-18
c. I-131 and I-131
d. Rn-222 and Ra-222
20. Who has been your best science teacher?
a. Ms. Swopes
b. Ms. Swopes
c. Ms. Swopes
d. Cierra C. Swopes
20. Who has been your best science teacher?
a. Ms. Swopes
b. Ms. Swopes
c. Ms. Swopes
d. Cierra C. Swopes