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Chapter 4:  Chemcial Bonding (Online) 0910
This test has 46 questions - work efficiently.

 1. 
One example of a chemical change is
A.
cutting up paper.
B.
burning gasoline in an engine.
C.
boiling water.
D.
crushing a can.
 

 2. 
The measurement of the force of gravity on an object is the object’s
A.
mass.
B.
volume.
C.
weight.
D.
density.
 

 3. 
A solid is a state of matter that has a(n)
A.
indefinite volume and an indefinite shape.
B.
definite volume and a definite shape.
C.
definite volume and an indefinite shape.
D.
indefinite volume and a definite shape.
 

 4. 
In which state of matter are particles packed tightly together in fixed positions?
A.
gas
B.
solid
C.
liquid
D.
compound
 

 5. 
In which state of matter do the particles spread apart and fill all the space available to them?
A.
crystal
B.
liquid
C.
gas
D.
solid
 

 6. 
Which of these particles has a positive charge?
A.
atom
B.
proton
C.
neutron
D.
electron
 

 7. 
Very energetic particles that move in all directions around the nucleus of an atom are
A.
charges.
B.
neutrons.
C.
electrons.
D.
protons.
 

 8. 
What is the greatest number of valence electrons an atom can have?
A.
1
B.
3
C.
8
D.
100
 

 9. 
The modern periodic table is arranged in order of increasing
A.
atomic mass.
B.
number of valence electrons.
C.
atomic number.
D.
number of neutrons.
 

 10. 
What is an ion?
A.
an atom that doesn’t have neutrons
B.
an atom or group of atoms that has become electrically charged
C.
the opposite of an electron
D.
an atom that doesn’t have protons
 

 11. 
When an atom loses an electron, it becomes a
A.
positive ion.
B.
negative ion.
C.
neutral ion.
D.
neutral atom.
 

 12. 
When an electron is transferred from a sodium atom to a chlorine atom, the chlorine atom becomes
A.
a negative ion.
B.
a positive ion.
C.
a negative atom.
D.
neutral.
 

 13. 
An ionic bond is the attraction between
A.
similarly charged ions.
B.
oppositely charged ions.
C.
neutral ions.
D.
neutral atoms.
 

 14. 
An ionic bond is formed when
A.
electrons are shared.
B.
electrons are destroyed.
C.
electrons are transferred.
D.
electrons are combined.
 

 15. 
Ionic compounds are electrically
A.
charged.
B.
positive.
C.
negative.
D.
neutral.
 

 16. 
How many chloride ions are needed to cancel the 2+ charge of magnesium in magnesium chloride (MgCl2)?
A.
1
B.
2
C.
3
D.
4
 

 17. 
Ions that are made of more than one atom are examples of
A.
polyatomic ions.
B.
negative ions.
C.
positive ions.
D.
neutral ions.
 

 18. 
What is the chemical name for the compound with the formula Na2S?
A.
sodium fluoride
B.
magnesium sulfide
C.
lithium oxide
D.
sodium sulfide
 

 19. 
The ionic compound MgO is called
A.
oxide magnesium.
B.
oxygen magnesium.
C.
magnesium oxygen.
D.
magnesium oxide.
 

 20. 
Which of the following is NOT a characteristic property of ionic compounds?
A.
They have high melting points.
B.
They have low melting points.
C.
They form crystals.
D.
They conduct electricity when dissolved in water.
 

 21. 
In what form can an ionic compound conduct electricity?
A.
as a solid
B.
when dissolved in water
C.
as a crystal
D.
when warmed slightly
 

 22. 
A chemical bond that forms when two atoms share electrons is called a(n)
A.
ionic bond.
B.
covalent bond.
C.
polyatomic bond.
D.
crystal bond.
 

 23. 
Bonds that form between two nonmetals are usually
A.
impossible.
B.
weak.
C.
covalent.
D.
ionic.
 

 24. 
How many covalent bonds can oxygen form?
A.
1
B.
2
C.
3
D.
4
 

 25. 
What is a double bond?
A.
a bond between two atoms
B.
one pair of electrons shared between two atoms
C.
two pairs of electrons shared between two atoms
D.
two pairs of electrons shared between four atoms
 

 26. 
How many pairs of electrons are shared in a triple bond?
A.
1
B.
4
C.
3
D.
6
 

 27. 
A molecular compound consists of
A.
oppositely charged particles.
B.
polyatomic ions.
C.
molecules that contain ionic bonds.
D.
molecules that have covalently bonded atoms.
 

 28. 
Which is a property shared by most molecular compounds?
A.
high boiling point
B.
high melting point
C.
low melting point
D.
nonpolar bonds
 

 29. 
A covalent bond in which electrons are shared unequally is
A.
polar.
B.
a double bond.
C.
ionic.
D.
polyatomic.
 

 30. 
Water is polar and oil is nonpolar. What happens when the two liquids are poured into the same container?
A.
Both liquids become nonpolar.
B.
A gas is produced.
C.
The liquids mix well.
D.
The liquids do not mix.
 

 31. 
Which of the following is a characteristic of halite?
A.
It cannot be scratched with a steel knife.
B.
It does not dissolve in water.
C.
If you break it, the smaller pieces all have the same shape as the bigger piece.
D.
It has round-shaped crystals.
 

 32. 
A naturally occurring solid with a crystal structure and a definite chemical composition is a(n)
A.
ion.
B.
mineral.
C.
atom.
D.
electron.
 

 33. 
When a bromine atom gains one electron, it ____.
A.
will not react with other ions
B.
becomes negatively charged
C.
becomes positively charged
D.
also gains one additional proton
 

 34. 
When a sulfur atom gains two electrons, it ____.
A.
will not react with other ions
B.
also loses all of its protons
C.
remains electrically neutral
D.
becomes negatively charged
 

 35. 
In order to become a negative ion, an atom must ____.
A.
gain at least one electron
B.
lose at least one electron
C.
gain at least one neutron
D.
neither gain nor lose electrons
 

 36. 
In order to become a positive ion, an atom must ____.
A.
lose at least one electron
B.
lose at least one neutron
C.
combine with another ion
D.
gain at least one neutron
 

 37. 
When an atom has equal numbers of protons and electrons, it ____.
mc037-1.jpg
A.
has no protons
B.
has no neutrons
C.
is electrically neutral
D.
has a negative charge
 

 38. 
When an ion has more electrons than protons, it ____.
A.
has no neutrons
B.
has no protons
C.
has a negative charge
D.
has a positive charge
 

 39. 
A strontium ion is written as Sr2+. What information does this notation provide?
A.
This atom has become an ion by gaining electrons.
B.
This ion has a positive charge.
C.
This ion has two neutrons.
D.
This ion has two protons.
 
 
nar001-1.jpg
 

 40. 
Refer to the Periodic Table of Elements shown above. Which element group needs to gain two electrons to achieve atomic stability?
A.
group 17, the halogens
B.
group 14, the carbon group
C.
group 16, the oxygen group
D.
group 18, the noble gases
 

 41. 
Refer to the Periodic Table of Elements shown above. Which element group is the least chemically reactive?
A.
group 16, the oxygen group
B.
group 18, the noble gases
C.
group 14, the carbon group
D.
group 17, the halogens
 

 42. 
Refer to the Periodic Table of Elements shown above. Which element group is highly reactive, needing to gain just one electron to achieve atomic stability?
A.
group 16, the oxygen group
B.
group 17, the halogens
C.
group 14, the carbon group
D.
group 18, the noble gases
 

 43. 
Which atoms combine to form the molecule CH3CH2CH2Br?
A.
CH3, CH2, and Br
B.
C, H, and Br
C.
CH and Br
D.
CH3 and CH2
 

 44. 
Which of these is NOT an example of a chemical change?
A.
leaves changing color in the fall
B.
a burning match
C.
a plant making sugars and starches for growth
D.
slicing a loaf of bread
 

 45. 
A hard rain leaves puddles of water (H2O) on the ground. Later in the day, the water is gone. The liquid water has become a gas through the process of ____.
A.
evaporation
B.
condensation
C.
melting
D.
freezing
 

 46. 
Which unit could not be used to describe the distance an object travels?
A.
second
B.
mile
C.
meter
D.
kilometer
 



 
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