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15
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This uses the symbol for an element and dots representing the number of electrons in the element's outer energy level.
Electron dot diagram
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15
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What is the smallest piece of matter that still retains the property of the element?
Atom
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15
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What is the positively charged center of an atom that contains protons and neutrons and is surrounded by a cloud of electrons called?
Nucleus
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15
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This particle is negatively charged and it surrounds the center of an atom.
Electron
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15
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A vertical column in the periodic table is called a...
Group
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15
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This represents the number of protons in an atom's nucleus.
Atomic number
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15
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This is an organized list of all known elements that are arranged according to repeated changes in properties.
Periodic Table
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15
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A horizontal row in the periodic table is called a...
Period
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banana
Go to last place!
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star
Double points!
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shark
Other team loses 15 points!
Okay!
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baam
Lose 10 points!
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lifesaver
Give 10 points!
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fairy
Take points!
5
10
15
20
25
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gift
Win 25 points!
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banana
Go to last place!
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15
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This particle is has a neutral charge, is composed of quarks, and is found inside the nucleus of an atom.
Neutron
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banana
Go to last place!
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star
Double points!
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rocket
Go to first place!
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baam
Lose 10 points!
Oops!
15
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This represents the sum of the number of protons and neutrons in an atom's nucleus.
Mass number
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15
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This particle is positively charged, composed of quarks, and is found inside the nucleus of an atom.
Proton
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