An element that is malleable, ductile, and a good conductor of heat and electricity would be classified as a
a. metalloid.
b. semimetal.
c. metal.
d. nonmetal.
[Ques. 2] Evidence of seafloor spreading along the Mid-Atlantic Ridge is given by
a. sea life.
b. remanent magnetism.
c. ocean currents.
d. glaciation.
[Ques. 3] The chemical properties of calcium and strontium are similar because both
a. are located on the left side the periodic table.
b. are in the same group.
c. have four electrons in the first shell.
d. are in the same period.
[Ques. 4] Evidence for the existence for Pangaea includes
a. biological evidence only.
b. continuity of geologic features only.
c. glacial evidence only.
d. all of the above.
[Ques. 5] The chemical properties of chlorine and bromine are similar because both
a. are nonmetals and they are close together in the periodic table.
b. have seven valence electrons.
c. have two electrons in the first shell.
d. are in the same period.
[Ques. 6] Pangaea is believed to have broken up about how many years ago?
a. 2000 million
b. 2 million
c. 20 million
d. 200 million
[Ques. 7] The major credit for the development of the periodic table goes to
a. Berzelius.
b. Lavoisier.
c. Boyle.
d. Mendeleev.
[Ques. 8] The idea of continental drift was not generally accepted when Wegener proposed it because
a. the Bible did not support it.
b. Wegener was a meteorologist, not a geologist.
c. Wegener was not well known.
d. no satisfactory mechanism was proposed.
[Ques. 9] The vertical columns of elements in the periodic table are called
a. periods.
b. groups.
c. families.
d. series.
[Ques. 10] Alfred Wegener speculated that the present continents were once part of a single supercontinent that he named
a. Landusia.
b. Atlantis.
c. Pangaea.
d. Gondaland.
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