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8th Grade Carbon Chemistry
Test Description: Chapter 8 in text
Instructions: Answer all questions to get your test result.
1) Which is NOT typically a property of organic compounds?
A
ability to conduct electricity
B
insoluble in water
C
low boiling points
D
low melting points
2) What factor determines the primary differences among living things?
A
the type of complex carbohydrates in their diet
B
the order of nucleotides in their DNA
C
the variety of proteins in their diet
D
whether or not their bodies contain nucleic acids
3) What nutrients needed by the human body are NOT organic compounds?
A
minerals
B
simple carbohydrates
C
nucleic acids
D
vitamins
4) Which of these compounds has the maximum possible number of hydrogen atoms on its carbon chain?
A
saturated hydrocarbon
B
hydrocarbon with double bonds
C
unsaturated hydrocarbon
D
hydrocarbon with triple bonds
5) What property do all hydrocarbons have?
A
they have high melting points
B
they burn easily
C
they dissolve in water
D
they make good conductors of electricity
6) Which of the following is a property of many organic liquids?
A
they have strong odors
B
they dissolve well in water
C
they have high boiling points
D
they are good conductors of electricity
7) What is the shape of pure carbon fullerenes?
A
hollow ball with a pattern like a geodesic dome
B
hollow tube
C
hard, solid crystal shaped like a ball
D
flat layers
8) In which type of substituted hydrocarbon might chlorine be the substituted atom(s)?
A
ester
B
halogen compound
C
organic acid
D
alcohol
9) Which class of organic compounds stores the most energy, gram for gram?
A
carbohydrates
B
proteins
C
lipids
D
nucleic acids
10) Starch is an example of a
A
simple carbohydrate
B
nucleic acid
C
protein
D
complex carbohydrate
11) An element whose atoms can make straight chains, branched chains, and rings is
A
nitrogen
B
oxygen
C
hydrogen
D
carbon
12) Which compounds have the same molecular formula but different structures?
A
hydrocarbons
B
organic compounds
C
isomers
D
polymers
13) The organic compounds that serve as helper molecules in many of the body's chemical reactions are called
A
vitamins
B
minerals
C
amino acids
D
nucleotides
14) How many chemical bonds can each carbon atom form?
A
four
B
three
C
two
D
one
15) A carbohydrate is made up of the elements carbon and hydrogen, plus
A
oxygen
B
oxygen and nitrogen
C
oxygen and phosphorus
D
oxygen and sulfer
*select an answer for all questions
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