A puddle of water evaporates. Chemical or Physical Change?
Physical. Liquid changed to Gas only
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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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15
Who was drafted as the number one pick in the 2021 NFL Draft?(hint: it was last week and he went to the Jags)
Trevor Lawrence
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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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15
A sample of water vapor condenses to form liquid water. What change in the water molecules occur?
They moved closer together
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15
Name two examples of a pure substance
Random
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10
Salt water is a homogenous or heterogenous mixture?
Homogenous
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15
Name Three Disney Movies
Random
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10
A scientist examines a substance in a container. The substance does not have a shape or volume. What is sit?
Gas
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heart
Other team wins 15 points!
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gold
Win 50 points!
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gift
Win 25 points!
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thief
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15
Boiling point, Combustibility, Oxidation, Reactivity. Which one is a physical property?
Boiling Point
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5
A banana changing colors on the kitchen counter. Chemical or Physical Change?
Chemical
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10
What state of matter has a definite shape but not a definite volume?
Liquid
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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