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Chapter 9-Part II
Test Description: Carbon Chemistry
Instructions: Answer all questions to get your test result.
1) When amino acids are linked together, the molecule formed is a
A
protein
B
polyalcohol
C
lipid
D
carbohydrates
2) All organic compounds contain
A
nitrogen
B
hydrogen
C
oxygen
D
carbon
3) Which of these statements is true of saturated hydrocarbons?
A
They have at least one carbon to carbon double bond.
B
They contain only single bonds.
C
They have one or more carbon to carbon triple bonds.
D
They contain one carbon to carbon double bond.
4) Organic compounds ___________________.
A
all contain amino acids
B
cannot be made in the laboratory
C
occur in living organisms
D
all contain hydrogen
5) When a hydroxyl group is substituted for a hydrogen atom in a hydrocarbon, what type of molecule results?
A
a carboxylic acid
B
a polymer
C
an amine
D
an alcohol
6) A carboxyl group is made up of ____________________.
A
one hydrogen atom, two oxygen atoms, and one carbon atom
B
one carbon atom, one oxygen atom, and one hydrogen atom
C
one hydrogen atom and two carbon atoms
D
one nitrogen atom and two hydrogen atoms
7) Sugars and starches are ______________________.
A
proteins
B
hydrocarbons
C
lipids
D
carbohydrates
8) When both -NH2 and -COOH replace hydrogen atoms on the same carbon atom, a(n) _____________ is formed.
A
amine
B
amino acid
C
carboxylic acid
D
carbohydrate
9) The short chain hydrocarbons methane, ethane, and propane are useful as fuel because they _____________.
A
evaporate and burn easily
B
do not readily evaporate
C
form solids at room temperature
D
have high boiling points
10) Which of the following is NOT a polymer?
A
starch
B
protein
C
glucose
D
cellulose
11) Which of the following will cause a greater amount of oxygen to dissolve in 100 g of water?
A
increase the oxygen gas pressure
B
all of the above
C
heat the water
D
decrease the oxygen gas pressure
12) The atmosphere of the earth is an example of a ___________________ solution.
A
solid-liquid
B
liquid-liquid
C
gas-liquid
D
gas-gas
13) The amount of table sugar that will dissolve in 1 kg of water can be increased by ___________________.
A
heating the solution
B
doing any of the above
C
breaking the sugar into smaller pieces
D
stirring the solution
14) Which of the following changes gives NO evidence that a chemical reaction has taken place?
A
a polar molecule like the fruit sugar, fructose
B
a polar molecule like ethyl alcohol
C
an ionic compound, such as magnesium chloride
D
a nonpolar molecule like cholesterol
15) Which of the following types of substance would be least likely to dissolve in water?
A
a cube of solid forms a puddle of liquid
B
heating a blue solid turns the solid white
C
two liquids are mixed, and a precipitate froms
D
a certain liquid is added to a solid, and bubbles of gas form
16) Which of the following changes is chemical rather than physical?
A
wood is burned
B
water is boiled
C
glass is shattered
D
aluminum foil is crumpled
17) A solution that contains a large amount of solute compared to solvent is described as ___________________ .
A
dilute
B
heterogeneous
C
concentrated
D
unsaturated
18) Which one of the following factors would not speed up a chemical reaction?
A
two logs, each one foot in diameter
B
both logs and the splinters will burn at the same rate
C
a log, two feet in diameter
D
a pile of small splinters made from a two-foot diameter log
19) Which of the following materials will burn the fastest in open air?
A
adding a catalyst
B
making the reactant particles larger
C
increasing the concentration of a reactant
D
raising the temperature
*select an answer for all questions
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