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10
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Phase change of water occurs when
Heat energy is added or removed.
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10
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What does conserve mean?
Saved, kept the same.
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10
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What are the 3 phases?
Solid, liquid,gas
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10
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If a pot is left on the stove with water to boil, some of the water disappears. Where did the water go?
When water is heated it changes form from liquid to gas. The gas then escapes into the air.
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lifesaver
Give 20 points!
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gift
Win 25 points!
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gift
Win 25 points!
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banana
Go to last place!
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10
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What is matter?
Anything that has weight and takes up space.
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10
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Why do some reactions have different weights at the beginning and the end?
Some atoms can escape if the reaction is not a closed system.
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10
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Can matter vanish?
No
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10
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What is a gram?
A scientific unit of measuring how heavy something is. A US dollar bill weights about 1 gram.
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10
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The law of conservation of mass quiz
atoms are neither created or destroyed during a reaction
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thief
Give points!
5
10
15
20
25
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gold
Win 50 points!
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shark
Other team loses 25 points!
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baam
Lose 10 points!
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banana
Go to last place!
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gift
Win 15 points!
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gift
Win 15 points!
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banana
Go to last place!
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10
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The newly formed substances at the end of a reaction are called:
Products
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10
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When two different substances are mixed:
Their weight combined
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baam
Lose 10 points!
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gift
Win 25 points!
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rocket
Go to first place!
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baam
Lose 20 points!
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10
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What does dissolve mean?
To mix in with another substance. For example: when salt is added to water, it forms saltwater.
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