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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
SF4
C
CaCl2
D
KF
2) Which of the following is a polar covalent bond?
A
Si-Si
B
Ca-Cl
C
P-Cl
D
Cl-Cl
3) Which of the following is a nonpolar covalent bond?
A
Si-Si
B
P-Cl
C
Ca-Cl
D
Cl-Cl
4) covalent bonds are formed when 2 atoms ___________ valence electrons
A
none of the choices
B
gain
C
lose
D
share
5) How many covalent bonds can a nitrogen (N) atom make?
A
1
B
2
C
3
D
4
6) O=O is an example of a ______________ bond
A
triple
B
single
C
double
D
ionic
7) Molecular compounds do not have which of the following properties?
A
poor conductivity
B
low melting points
C
high boiling points
D
none of the choices
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
neutral particles
B
molecules
C
charged particles
D
2 of the choices
10) ____________ molecules have ____________ bonds and mix well with polar molecules
A
nonpolar; stronger
B
nonpolar; weaker
C
polar; weaker
D
polar; stronger
*select an answer for all questions
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