Salt water is a homogenous or heterogenous mixture?
Homogenous
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10
What state of matter has a definite shape but not a definite volume?
Liquid
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15
A puddle of water evaporates. Chemical or Physical Change?
Physical. Liquid changed to Gas only
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15
Boiling point, Combustibility, Oxidation, Reactivity. Which one is a physical property?
Boiling Point
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15
Name two examples of a pure substance
Random
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15
To change from a liquid to a solid energy must be... added,removed, remiain constant?
Added ( heat + energy)
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trap
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fairy
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gift
Win 15 points!
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thief
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15
Name Three Disney Movies
Random
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thief
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seesaw
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shark
Other team loses 20 points!
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baam
Lose 15 points!
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20
When 105 grams of Calcium combine with fluorine gas to produce 200 grams of calcium fluoride. How much fluoride gas is needed to react with the 105 grams of calcium?
95 grams (Law of Conservation of Matter)
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5
A banana changing colors on the kitchen counter. Chemical or Physical Change?
Chemical
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5
State the Law of Conservation of Matter
Matter can never be created or destroyed
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25
Describe the difference between a chemical change & a physical change?
A chemical change creates something new, but a physical change does not
