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Physical Science Review 5.3
Test Description: Covalent Bonding
Instructions: Answer all questions to get your test result.
1) Which of the following has a covalent bond?
A
Al2O3
B
CaCl2
C
SF4
D
KF
2) Which of the following is a polar covalent bond?
A
P-Cl
B
Si-Si
C
Ca-Cl
D
Cl-Cl
3) Which of the following is a nonpolar covalent bond?
A
Ca-Cl
B
Cl-Cl
C
Si-Si
D
P-Cl
4) covalent bonds are formed when 2 atoms ___________ valence electrons
A
share
B
gain
C
lose
D
none of the choices
5) How many covalent bonds can a nitrogen (N) atom make?
A
2
B
1
C
4
D
3
6) O=O is an example of a ______________ bond
A
double
B
single
C
ionic
D
triple
7) Molecular compounds do not have which of the following properties?
A
none of the choices
B
poor conductivity
C
low melting points
D
high boiling points
8) The forces that hold ______________ together is _______
A
molecules; polar
B
ions; weak
C
ions; polar
D
molecules; weak
9) What is necessary to conduct an electric current?
A
molecules
B
neutral particles
C
charged particles
D
2 of the choices
10) ____________ molecules have ____________ bonds and mix well with polar molecules
A
polar; weaker
B
polar; stronger
C
nonpolar; weaker
D
nonpolar; stronger
*select an answer for all questions
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