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Bonding Basics
Test Description: Review of bonding for high school chemistry
Instructions: Answer all questions to get your test result.
1) What occurs when an atom of chlorine and an atom of hydrogen become a molecule of hydrogen chloride?
A
A chemical bond is broken and energy is absorbed
B
A chemical bond is broken and energy is released.
C
A chemical bond is formed and energy is absorbed.
D
A chemical bond is formed and energy is released.
2) Which compound has the greatest degree of ionic character?
A
MgF2
B
AlF3
C
NaF
D
SiF4
3) Two atoms with an electronegativity difference of 0.4 form a bond that is
A
covalent, because electrons are shared
B
ionic, because electrons are transferred
C
ionic, because electrons are shared
D
covalent, because electrons are transferred
4) Which element forms an ionic compound when it reacts with lithium?
A
Fe
B
Kr
C
K
D
Br
5) Which compound contains both ionic and covalent bonds?
A
sodium nitrate
B
methane
C
potassium chloride
D
ammonia
6) When a potassium atom reacts with bromine, the potassium atom will
A
lose only 1 electron
B
gain 2 electrons
C
gain only 1 electron
D
lose 2 electrons
7) Which formula correctly represents the compound calcium hydroxide?
A
CaOH2
B
CaOH
C
Ca2OH
D
Ca(OH)2
8) Which type of substance can conduct electricity in the liquid phase but NOT in the solid phase?
A
metallic element
B
nonmetallic element
C
molecular compound
D
ionic compound
9) Which pair of atoms is held together by a covalent bond?
A
KCl
B
LiCl
C
NaCl
D
HCl
10) Multiple covalent bonds exist in a molecule of
A
F2
B
N2
C
Cl2
D
H2
*select an answer for all questions
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