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15
×
Which radioactive particle causes a change in atomic mass?
alpha particle
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15
×
What type of radioactivity releases protons?
alpha
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15
×
Why do we use metals to make our pots and pans?
metals conduct heat
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15
×
Which side of the periodic table has LESS reactive elements?
right side
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15
×
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: Alkali metals are not found uncombined in nature.
True
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15
×
____ was the scientist who developed the periodic table.
Dmitri Mendeleev
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monster
Reset all scores!
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rocket
Go to first place!
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gift
Win 15 points!
Okay!
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thief
Give points!
5
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20
25
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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15
×
Which radioactive particle is a negative charge?
beta particle
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boom
Lose 50 points!
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magnet
Take 15 points!
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fairy
Take points!
5
10
15
20
25
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lifesaver
Give 15 points!
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seesaw
Swap points!
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star
Double points!
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rocket
Go to first place!
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baam
Lose 20 points!
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15
×
Which radioactive particle releases an electron?
beta particle
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15
×
Which radioactive particle is no charge?
gamma particle
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15
×
The Noble Gases have ___ valence electrons.
8
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15
×
An element's reactivity has to do with which subatomic particle?
electrons
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