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15
×
True or False? Water changes to ice at 32 degrees Celsius.
false - it's 32 degrees Fahrenheit
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15
×
How have engineers avoided issues to bridges caused by thermal expansion and contraction?
expansion joints
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15
×
Fill in the Blank: A change of state is a _____________ change.
physical
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20
×
When will a solid change to a liquid?
When enough energy (heat) is added.
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trap
No points!
Oops!
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shark
Other team loses 25 points!
Okay!
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fairy
Take points!
5
10
15
20
25
×
baam
Lose 25 points!
Oops!
15
×
What is a word that means changing from a solid to a liquid?
melting
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25
×
How are boiling and evaporation the same?
They both change a liquid to a gas.
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banana
Go to last place!
Oops!
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star
Double points!
Okay!
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rocket
Go to first place!
Okay!
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lifesaver
Give 15 points!
Oops!
20
×
What's wrong? Matter is often conserved in a physical change?
Often should read always.
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25
×
Why is frost an example of deposition?
Because water vapor changes directly to a solid skipping the liquid state.
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15
×
What happens to most substances when they get colder?
They contract/particles vibrate more slowly/eventually freeze.
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15
×
What is a word that means changing from a liquid to a gas?
boiling/evaporating/vaporizing
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heart
Other team wins 25 points!
Oops!
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star
Double points!
Okay!
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rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
25
×
How are boiling and evaporation different?
Boiling is rapid while evaporation is slow/gradual.
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25
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How is sublimation different from vaporization?
Sub. - solid to gas Vap. - liquid to a gas
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20
×
How are deposition and sublimation similar?
They both involve skipping a step when changing states of matter.
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