Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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The
most common type of homogeneous mixture is: a. | milk | d. | computer | b. | chocolate chip
cookie | e. | salt and
pepper | c. | solution | | | | |
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2.
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The
first person to propose the atom concept was: a. | Marie Curie | d. | Newton | b. | Elbert
Einstein | e. | Mendeleev | c. | Democritus | | | | |
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3.
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What
is the dense, positive center of the atom called? a. | electron | d. | nucleus | b. | proton | e. | formula
unit | c. | alpha
particle | | | | |
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4.
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Which
of the following is a chemical property? a. | flammability | d. | odor | b. | color | e. | taste | c. | hardness | | | | |
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5.
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What
type of mixture is represented by a collection of salt and pepper? a. | atoms | d. | hetrogeneous | b. | molecules | e. | homogeneous | c. | formula
units | | | | |
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6.
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Which
kind(s) of particles can be found in the nucleus of an atom? a. | protons | d. | protons and
electrons | b. | neutrons | e. | protrons and neutrons | c. | electrons | | | | |
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7.
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Group
7A, which includes chlorine and bromine is known by the name: a. | alkaline
metals | d. | transition
metals | b. | alkaline earth metals | e. | noble gases | c. | halogens | | | | |
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8.
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What
is the smallest particle of a compound that still has all the properties of the
compound? a. | charmed
particle | d. | quark | b. | molecule | e. | strange particle | c. | ion | | | | |
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9.
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The
physical property density is expressed mathematically by the formula: a. | D=m/v | c. | KE=1/2
mv2 | b. | E=mc2 | d. | t(K)=273+t(C) | | | | |
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10.
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What
is the number of stable isotopes most elements have:
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11.
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Which
state of matter has a definite volume and no definite shape? a. | liquid | d. | steam | b. | solid | e. | gas | c. | plasma | | | | |
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12.
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What
quantity is represented by the mass number minus the number of protons? a. | number of
atoms | d. | number of
protons | b. | number of neutrons | e. | number of wave units | c. | number of
electrons | | | | |
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13.
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Which
of the following explains the reason that chlorine has a mass of 35.45 AMU, not a whole number, on
the periodic table? a. | isotopes | d. | uneven particles | b. | electrons | e. | excess
neutrons | c. | protons | | | | |
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14.
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The
Russian scientist who proposed the law of periodicity, which is the basis for the periodic table
was: a. | Plato | d. | Galileo | b. | Robert Boyle | e. | John Dalton | c. | Dmitri
Mendeleev | | | | |
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15.
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Which
particle of an atom has a negative charge? a. | electron | d. | strange particle | b. | proton | e. | lepton | c. | neutron | | | | |
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