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15
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What does John Dalton’s atomic theory propose?
Matter is made of molecules.
Matter is made of light.
Matter is made of energy.
Matter is made of tiny pieces called atoms.
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What are diamonds made of?
Carbon atoms
Nitrogen atoms
Hydrogen and oxygen atoms
Zirconium and oxygen atoms
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How do chemists determine if a gemstone is a real diamond?
By looking for the presence of carbon atoms.
By examining its price.
By testing if it can dissolve in water.
By checking if it contains zirconium.
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15
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What is cubic zirconia made of?
Pure carbon
Molecules of gold
Groups of zirconium and oxygen atoms
Carbon and hydrogen atoms
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What makes Isovaleric acid smell unpleasant?
It has a slightly different atomic structure than ethyl buty
It is a solid at room temperature.
It is colorless.
It is made of sulfur atoms.
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banana
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gift
Win 25 points!
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gift
Win 15 points!
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baam
Lose 15 points!
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15
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What makes substances have different properties?
Their shape and size.
Their atomic weight.
The number and type of atoms that repeat in their structure.
The temperature at which they are found.
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How many different types of atoms are currently known?
118
150
50
100
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What is the difference between molecules and extended structures?
Molecules are larger than extended structures.
Molecules are separate units; extended structures are interc
Molecules are always solid; extended structures are liquid.
Molecules contain more oxygen than extended structures.
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15
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Which substance is an example of an extended structure?
Air
Ethyl butyrate
Water
Diamond
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Why are diamonds harder than cubic zirconia?
Diamonds are made of pure carbon atoms packed tightly.
Cubic zirconia contains impurities.
Diamonds are heavier.
Cubic zirconia is a liquid at high temperatures.
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thief
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25
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shark
Other team loses 25 points!
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rocket
Go to first place!
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banana
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boom
Lose 50 points!
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magnet
Take 25 points!
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fairy
Take points!
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25
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banana
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15
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What does the chemical formula C6H12O2 represent?
Ethyl butyrate
Isovaleric acid
Carbon dioxide
Water
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Why does ethyl butyrate smell pleasant like oranges?
It is a processed compound made in a lab.
It is made of carbon and hydrogen atoms.
It is found naturally in many fruits.
It has the same atomic structure as oxygen.
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banana
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seesaw
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gift
Win 15 points!
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banana
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