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15
×
____ is the most commonly found metalloid on Earth.
Silicon
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15
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An element's reactivity has to do with which subatomic particle?
electrons
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15
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Which family has characteristics of both metals and nonmetals?
Metalloids
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15
×
True or False: Most of the nonmetals are solid at room temperature.
False. Most are gases.
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eraser
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fairy
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25
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fairy
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25
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banana
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15
×
What did Thomson's atomic model look like?
the raisin or blueberry muffin model -- mostly positive with dots of negatives
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heart
Other team wins 25 points!
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rocket
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shark
Other team loses 20 points!
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baam
Lose 25 points!
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15
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Why is Hydrogen a "weird" nonmetal off by itself with the metals?
It has 1 valence electron like the Alkali metals
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15
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Why do we use metals to make our pots and pans?
metals conduct heat
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15
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The Noble Gases have ___ valence electrons.
8
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monster
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fairy
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25
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gift
Win 15 points!
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banana
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15
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When an element can be a conductor one minute and an insulator the next, it is called a ____.
Semiconductor
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15
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True or False: Most nonmetals are good conductors.
False. Most do NOT conduct heat or electricity.
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15
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____ was the scientist who developed the periodic table.
Dmitri Mendeleev
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15
×
Which is the MOST penetrating radioactive particle?
gamma
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15
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The ____ group of nonmetals are harmful to humans when not found in compounds.
The Halogens. For example, Chlorine
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