A puddle of water evaporates. Chemical or Physical Change?
Physical. Liquid changed to Gas only
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5
State the Law of Conservation of Matter
Matter can never be created or destroyed
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15
Name that song and artist!
My Choice
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thief
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gift
Win 5 points!
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rocket
Go to first place!
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banana
Go to last place!
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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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boom
Lose 50 points!
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star
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fairy
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lifesaver
Give 25 points!
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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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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
To change from a liquid to a solid energy must be... added,removed, remiain constant?
Added ( heat + energy)
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10
What state of matter has a definite shape but not a definite volume?
Liquid
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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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trap
No points!
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star
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rocket
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thief
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15
Name two examples of a pure substance
Random
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5
A banana changing colors on the kitchen counter. Chemical or Physical Change?
Chemical
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monster
Reset all scores!
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shark
Other team loses 10 points!
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rocket
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thief
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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