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15 Cards in this Set
- Front
- Back
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physical means can be used to separate:
elements pure substances mixtures compounds |
mixtures
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Group____in the periodic table contains only metals:
2 13 17 18 |
2
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based on their location in periodic table, oxygen and selenium have:
a.the same # of neutrons b.same conductivity c.similar properties d.same number of electron orbitals |
c. same properties
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which element has properties most similar to those of sodium?
a.boron b.calcium c.sulfur d.nitrogen |
b.calcium
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based on location on periodic table, you caould infer that ____is very unreactive.
Ca P Si Ar |
Ar-Argon because it is a noble gas
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based on their location of the periodic table, boron and antimony may be good elements to use as...
semiconductors fuels construction materials catalysts |
semiconductors
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the vertical column of blocks in the periodic table are called:
period group property octet |
group
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vertical column of blocks on table are called?
group period family octet |
period
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elements that border the zigzag line in the periodic table are:
inactive metals metalloids nonmetals |
metalloids
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T/F: Metalloids are generally unreactive.
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False.
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The reason for organizing, analyzing, and classifying data is
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to find telationships among the data
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which of tollowing is quantitative?
liquid is blue liquid boils at 100ºC liquid tastes bitter the liquid is cloudy |
liquid boils at 100ºC
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which is qualitative?
chemical has mass of 2g the volume is 4.5ml the liquid is blue and wet |
the liquid is blue and wet
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the validity of scientific concepts is evaluated by____
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testing hypotheses
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a theory is an accepted explanation of an observed phenomenon until_____
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repeated data and observation conflict whith the theory
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