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Practice Test 1 - Carbon



Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Carbon is able to bond with atoms of other elements in many different ways because it has
a.
six protons.
b.
four electrons.
c.
six valence electrons.
d.
four valence electrons.
 

 2. 

An element whose atoms can make straight chains, branched chains, and rings is
a.
carbon.
b.
hydrogen.
c.
nitrogen.
d.
oxygen.
 

 3. 

How many chemical bonds can each carbon atom form?
a.
one
b.
two
c.
three
d.
four
 

 4. 

Which form of pure carbon is so hard that it can be used in cutting tools?
a.
diamond
b.
graphite
c.
nanotube
d.
fullerene
 

 5. 

Which form of pure carbon is formed of layers that slide past one another?
a.
diamond
b.
graphite
c.
fullerene
d.
nanotube
 

 6. 

What is the shape of pure carbon fullerenes?
a.
hollow tube
b.
hollow ball with a pattern like a geodesic dome
c.
flat layers
d.
hard, solid crystal shaped like a ball
 

 7. 

What is another name for carbon compounds?
a.
carbohydrates
b.
fullerenes
c.
hydrocarbons
d.
organic compounds
 

 8. 

What can you tell about methane (CH4) from its molecular formula?
a.
It contains four carbon atoms.
b.
It contains one hydrogen atom.
c.
It contains four hydrogen atoms.
d.
It forms groups of four molecules.
 

 9. 

Compounds that contain only the elements carbon and hydrogen are called
a.
carbon chains.
b.
hydrocarbons.
c.
isomers.
d.
substituted hydrocarbons.
 

 10. 

In a nanotube, carbon atoms are arranged in
a.
flat layers.
b.
the shape of a spiral ladder.
c.
the shape of a long, hollow cylinder.
d.
the shape of a hollow sphere.
 

 11. 

A hydrocarbon in which each carbon atom in the molecule shares a single bond with each of four other atoms is a(n)
a.
saturated hydrocarbon.
c.
polyunsaturated hydrocarbon.
b.
unsaturated hydrocarbon.
d.
aromatic hydrocarbon.
 

 12. 

A hydrocarbon in which at least two carbon atoms share a double bond or a triple bond is a(n)
a.
aromatic hydrocarbon.
c.
polyunsaturated hydrocarbon.
b.
unsaturated hydrocarbon.
d.
alkane.
 



 
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