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15
×
Give one example of a physical change from the packet
melting ice
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seesaw
Swap points!
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fairy
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10
15
20
25
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gift
Win 25 points!
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lifesaver
Give 10 points!
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15
×
Which is a sign of a chemical change
freezing
melting
formation of a gas
breaking into pieces
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15
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What does reactivity describe
how smooth something feels
how well something floats
how flexible something is
how easily something reacts with oxygen or water *correct*
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15
×
Describe the difference between a reactant and a product
reactants start the reaction products form at the end
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15
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What is volume
the amount of space something takes up *correct*
the speed of particles
the heaviness of an object
the number of atoms in an object
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boom
Lose 50 points!
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magnet
Take 10 points!
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fairy
Take points!
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10
15
20
25
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lifesaver
Give 20 points!
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15
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Define mass in your own words
the amount of matter in an object
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15
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What happens to atoms during a reaction
they rearrange
they disappear
they multiply
they shrink
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15
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What is flammability
how much space it fills
how flexible something is
how easily something dissolves
how easily something lights on fire *correct*
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15
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Explain why rust is considered a chemical change
it creates a new substance
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15
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What happens to the total mass during a reaction according to the law of conservation of mass
it stays the same
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15
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What does the law of conservation of mass mean
mass stays the same during changes *correct*
mass disappears during changes
mass increases during changes
mass only applies to solids
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baam
Lose 25 points!
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star
Double points!
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fairy
Take points!
5
10
15
20
25
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banana
Go to last place!
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boom
Lose 50 points!
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fairy
Take points!
5
10
15
20
25
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rocket
Go to first place!
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lifesaver
Give 10 points!
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15
×
What happens in a chemical change
the substance stays the same
new substances form
only the size changes
only the temperature changes
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