Section 8.1
Forming Chemical Bonds
Practice Test
1.
What forms chemical bonds?
SC.A.1.4.5
a.
valence electrons
b.
noble gases
c.
inner-level electrons
d.
atomic nuclei
Hint
2.
Which of these is the electron configuration of an atom most likely to lose an electron?
a.
He
2s
2
2p
5
b.
1s
2
2s
2
2p
6
3s
2
3p
6
4s
1
c.
1s
2
2s
2
2p
6
d.
1s
2
2s
2
2p
6
3s
2
3p
5
Hint
3.
What is a negatively charged ion called?
a.
cation
b.
anion
c.
nucleus
d.
molecule
Hint
4.
Why is the calcium ion Ca
2+
more stable than the calcium atom Ca
SC.A.1.4.1
a.
Eighteen electrons are less stable than twenty electrons.
b.
Twenty electrons are more stable than eighteen electrons.
c.
The noble gas configuration is more stable.
d.
The two electrons more than the noble gas configuration is more stable.
Hint
5.
How many electrons are present in the valence level for all noble gases except helium?
SC.A.2.4.5
a.
6
b.
7
c.
8
d.
9
Hint
6.
Which of these is the electron configuration of an atom most likely to gain an electron?
a.
1s
2
2s
2
2p
6
3s
2
3p
6
4s
1
b.
1s
2
2s
2
2p
6
3s
1
c.
1s
2
2s
2
2p
6
3s
2
3p
5
d.
1s
2
2s
2
2p
6
Hint
7.
Which elements can either gain or lose electrons to form stable octets?
SC.A.2.4.5
a.
metalloids
b.
transition metals
c.
metals
d.
nonmetals
Hint
8.
_____________ is the force that holds two atoms together.
SC.A.1.4.5
a.
Nuclear force
b.
Fission
c.
Glue
d.
A chemical bond
Hint
9.
A positive ion forms when ___________.
SC.A.2.4.1
a.
an atom loses one or more valence electrons
b.
electrons are pushed out of the nucleus
c.
an atom gains one or more valence electrons
d.
electrons are pulled into the nucleus
Hint
