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seesaw
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fairy
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fairy
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thief
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15
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Which scientist developed the most accurate theory of an atom?
Schrodinger
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20
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What makes up most of an atom’s mass?
the nucleus
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15
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What do we call the central core of an atom?
the nucleus
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20
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What two elements make salt?
sodium and chlorine
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15
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True or False? All substances are made from two or more elements.
False
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20
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Identify THREE examples of properties.
color/hardness/density
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15
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What charge does a neutron have?
no charge - neutral
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An/A ___________________ is the smallest particle of an element that still has the properties of that element.
atom
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What is an atoms mostly made up of?
empty space
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How can you prove that an element is truly an element (not a molecule)?
It can't be broken down into anything smaller.
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15
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Which one is not a molecule? O/O2/H2O/NaCl
O - because it is just one atom of oxygen - the others are 2 or 3 atoms combined
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seesaw
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gift
Win 5 points!
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rocket
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thief
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What are the tiny particles that make up an atom?
protons/electrons/neutrons
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25
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How is Schrodinger's theory different from the others?
His theory includes the electron clouds or orbitals.
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monster
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gold
Win 50 points!
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rocket
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banana
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