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15
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True or False: Particles in a solid do not move at all.
False (they vibrate in place)
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15
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What happens to particles during diffusion?
They spread out until evenly distributed.
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15
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Name two things that can speed up evaporation.
Higher temperature, larger surface area, wind, lower humidity
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15
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What is a mixture?
Two or more substances physically combined.
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15
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A balloon gets bigger when warmed. Why?
Gas particles move faster and spread out more.
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15
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Give one example of a physical change.
Melting ice, dissolving salt, tearing paper, boiling water
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seesaw
Swap points!
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magnet
Take 25 points!
Okay!
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shark
Other team loses 20 points!
Okay!
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lifesaver
Give 25 points!
Oops!
15
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In which state of matter are particles packed closest together?
Solid
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15
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Explain the difference between a physical change and a chemical change.
A physical change does not create a new substance; a chemical change creates a new substance.
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thief
Give points!
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25
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rocket
Go to first place!
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fairy
Take points!
5
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25
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baam
Lose 10 points!
Oops!
15
×
What are the three common states of matter?
Solid, liquid, gas
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15
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A student leaves a puddle of water outside. After a few days it disappears. What process occurred?
Evaporation
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15
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What happens to particle movement when temperature increases?
Particles move faster.
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15
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What state of matter is water at room temperature?
Liquid
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monster
Reset all scores!
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fairy
Take points!
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25
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rocket
Go to first place!
Okay!
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thief
Give points!
5
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25
15
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What is the process called when a gas changes directly into a liquid?
Condensation
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