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Bonding
Test Description: Chemical bonding
Instructions: Answer all questions to get your test result.
1) Which two substances are covalent compounds?
A
C6H12O6(s) and HCl(g)
B
C6H12O6(s) and KI(s)
C
NaCl(s) and HCl(g)
D
KI(s) and NaCl(s)
2) Which type of bond results when one or more valence electrons are transferred from one atom to another?
A
metallic
B
ionic
C
hydrogen
D
covalent
3) What is the total number of pairs of electrons shared in a molecule of N2?
A
2
B
4
C
1
D
3
4) The degree of polarity of a chemical bond in a molecule of a compound can be predicted by determining the difference in the
A
atomic masses
B
atomic radii
C
melting points
D
electronegativities
5) Which compound contains both ionic and covalent bonds?
A
CaCO3
B
MgF2
C
H2O
D
KI
6) Which molecule contains a nonpolar covalent bond?
A
CO2
B
CO
C
CCl4
D
Br2
7) What occurs when an atom of chlorine and an atom of hydrogen become a molecule of hydrogen
A
A bond is broken and energy is absorbed
B
A bond is formed and energy is absorbed
C
A bond is formed and energy is released
D
A bond is broken and energy is released
8) Which compound contains ionic bonds?
A
NO
B
CO2
C
CaO
D
NO2
9) 21Which of the following elements has the highest electronegativity?
A
K
B
Cl
C
Ca
D
Al
10) Which type of bond involves the sharing of electrons
A
Hydrogen
B
Ionic
C
Covalent
D
Metallic
*select an answer for all questions
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