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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
polyalcohol
B
lipid
C
carbohydrates
D
protein
2) All organic compounds contain
A
oxygen
B
carbon
C
hydrogen
D
nitrogen
3) Which of these statements is true of saturated hydrocarbons?
A
They have one or more carbon to carbon triple bonds.
B
They have at least one carbon to carbon double bond.
C
They contain one carbon to carbon double bond.
D
They contain only single bonds.
4) Organic compounds ___________________.
A
occur in living organisms
B
all contain amino acids
C
cannot be made in the laboratory
D
all contain hydrogen
5) When a hydroxyl group is substituted for a hydrogen atom in a hydrocarbon, what type of molecule results?
A
an alcohol
B
a carboxylic acid
C
a polymer
D
an amine
6) A carboxyl group is made up of ____________________.
A
one carbon atom, one oxygen atom, and one hydrogen atom
B
one hydrogen atom and two carbon atoms
C
one hydrogen atom, two oxygen atoms, and one carbon atom
D
one nitrogen atom and two hydrogen atoms
7) Sugars and starches are ______________________.
A
lipids
B
hydrocarbons
C
carbohydrates
D
proteins
8) When both -NH2 and -COOH replace hydrogen atoms on the same carbon atom, a(n) _____________ is formed.
A
amino acid
B
amine
C
carboxylic acid
D
carbohydrate
9) The short chain hydrocarbons methane, ethane, and propane are useful as fuel because they _____________.
A
do not readily evaporate
B
form solids at room temperature
C
have high boiling points
D
evaporate and burn easily
10) Which of the following is NOT a polymer?
A
protein
B
starch
C
glucose
D
cellulose
11) Which of the following will cause a greater amount of oxygen to dissolve in 100 g of water?
A
all of the above
B
increase the oxygen gas pressure
C
decrease the oxygen gas pressure
D
heat the water
12) The atmosphere of the earth is an example of a ___________________ solution.
A
solid-liquid
B
gas-gas
C
liquid-liquid
D
gas-liquid
13) The amount of table sugar that will dissolve in 1 kg of water can be increased by ___________________.
A
stirring the solution
B
heating the solution
C
doing any of the above
D
breaking the sugar into smaller pieces
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
an ionic compound, such as magnesium chloride
C
a nonpolar molecule like cholesterol
D
a polar molecule like ethyl alcohol
15) Which of the following types of substance would be least likely to dissolve in water?
A
two liquids are mixed, and a precipitate froms
B
a certain liquid is added to a solid, and bubbles of gas form
C
heating a blue solid turns the solid white
D
a cube of solid forms a puddle of liquid
16) Which of the following changes is chemical rather than physical?
A
water is boiled
B
wood is burned
C
aluminum foil is crumpled
D
glass is shattered
17) A solution that contains a large amount of solute compared to solvent is described as ___________________ .
A
heterogeneous
B
dilute
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 pile of small splinters made from a two-foot diameter log
D
a log, two feet in diameter
19) Which of the following materials will burn the fastest in open air?
A
adding a catalyst
B
raising the temperature
C
making the reactant particles larger
D
increasing the concentration of a reactant
*select an answer for all questions
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