8th Grade Carbon Chemistry Question Preview (ID: 49628)
Chapter 8 In Text.
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Which is NOT typically a property of organic compounds?
a) low melting points
b) ability to conduct electricity
c) insoluble in water
d) low boiling points
What factor determines the primary differences among living things?
a) whether or not their bodies contain nucleic acids
b) the order of nucleotides in their DNA
c) the type of complex carbohydrates in their diet
d) the variety of proteins in their diet
What nutrients needed by the human body are NOT organic compounds?
a) vitamins
b) nucleic acids
c) minerals
d) simple carbohydrates
Which of these compounds has the maximum possible number of hydrogen atoms on its carbon chain?
a) hydrocarbon with double bonds
b) hydrocarbon with triple bonds
c) saturated hydrocarbon
d) unsaturated hydrocarbon
What property do all hydrocarbons have?
a) they burn easily
b) they dissolve in water
c) they make good conductors of electricity
d) they have high melting points
Which of the following is a property of many organic liquids?
a) they dissolve well in water
b) they are good conductors of electricity
c) they have strong odors
d) they have high boiling points
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
In which type of substituted hydrocarbon might chlorine be the substituted atom(s)?
a) alcohol
b) ester
c) halogen compound
d) organic acid
Which class of organic compounds stores the most energy, gram for gram?
a) proteins
b) nucleic acids
c) lipids
d) carbohydrates
Starch is an example of a
a) nucleic acid
b) protein
c) simple carbohydrate
d) complex carbohydrate
An element whose atoms can make straight chains, branched chains, and rings is
a) carbon
b) hydrogen
c) nitrogen
d) oxygen
Which compounds have the same molecular formula but different structures?
a) hydrocarbons
b) isomers
c) organic compounds
d) polymers
The organic compounds that serve as helper molecules in many of the body's chemical reactions are called
a) amino acids
b) minerals
c) nucleotides
d) vitamins
How many chemical bonds can each carbon atom form?
a) one
b) two
c) three
d) four
A carbohydrate is made up of the elements carbon and hydrogen, plus
a) oxygen
b) oxygen and nitrogen
c) oxygen and sulfer
d) oxygen and phosphorus
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