Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Sublimation of Solid Carbon dioxide(Dry ice) would
be:
a. | Melting | d. | Physical Change | b. | Boiling | e. | Chemical Change | c. | Freezing |
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2.
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Which among the following is an alkali metal
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3.
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The chemical family with group valency of 2
is
a. | alkali metals | d. | transition metals | b. | halogens | e. | alkaline earth metals | c. | noble
gases |
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4.
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A cation or a positive ion is formed from /
by
a. | gain of electrons | d. | non metals | b. | loss of electrons | e. | none of the above | c. | neither gain or loss
of electrons |
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5.
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Chlorine has 7 valence electrons it would gain
_______ to form an 'Anion' or negative ion
a. | 7 electrons | d. | 1 electron | b. | 3 electrons | e. | no electrons | c. | 2
electrons |
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6.
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How many chloride ions are needed to form a
molecule of aluminum chloride
a. | 1 Cl-1 ion | d. | 4 Cl-1 ion | b. | 2 Cl-1 ion | e. | 6
Cl-1 ion | c. | 3
Cl-1 ion |
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7.
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In a periodic table elements with similar chemical
properties are grouped:
a. | in horizontal rows | d. | in periods | b. | in vertical columns | e. | none of the above | c. | diagonally |
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8.
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Isoelectronic means
a. | atoms with same number of neutrons | b. | atoms with same number of
protons | c. | atoms with same number of electrons | d. | atoms with same number of protons but different
number of neutrons | e. | none of the
above |
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9.
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Which among the following is a true solution or homogenous solution
a. | sugar in water | d. | oil in water | b. | chalk powder in water | e. | iron filings and sulfur | c. | pizza |
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10.
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Which of the following is an element?
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11.
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Which of the following elements is most stable
a. | L
lithium | d. | neon | b. | beryllium | e. | calcium | c. | fluorine |
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12.
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According to the periodic table, an oxygen ion will most likely have
a. | one missing electron | d. | two extra electrons | b. | two missing electrons | e. | one extra electron | c. | two extra
protons |
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13.
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An atom with 8 neutrons and 9 electrons
a. | must be an oxygen atom because its atomic number is 8 | b. | must be an oxygen
ion because its atomic number is 8 | c. | must be fluorine atom because its atomic
number is 9 | d. | must be either oxygen or fluorine | e. | none of the
above |
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14.
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Metals are elements which
a. | usually lack lusture | b. | are found on the far right of the periodic
table | c. | are good insulators | d. | are poor conductors of heat | e. | include sodium and
potassium |
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15.
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Which group of elements would most likely chemically react with sodium?
a. | alkali metals | d. | halogens | b. | group two elements | e. | noble gases | c. | transition
metals |
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16.
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All matter in the universe can best be subdivided into two groups called
a. | elements and compounds | d. | pure substances and solutions | b. | soultions and
mechanical mixtures | e. | mixtures and pure substances | c. | elements and
mixtures |
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17.
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When sodium and oxygen are allowed to react the resulting compound will be
a. | an ionic compound | d. | a mixture | b. | a pure covalent compound | e. | a solution | c. | a polar covalent
compound |
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18.
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The major difference between a neutron and an electron is
a. | its charge | d. | all of the above | b. | its mass | e. | none of the above | c. | its
location |
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19.
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Group 17 elements are known as
a. | alkali metals | d. | halogens | b. | alkaline earth metals | e. | noble gases | c. | chalcogens |
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20.
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The formula of sodium sulfate would be
a. | Na2SO3 | d. | NaS | b. | Na2SO4 | e. | Na2S | c. | NaSO4 |
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