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15
×
What happens to molecules when kinetic energy increases?
they move slower
they move faster
they defy gravity
they stay the same
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15
×
Using the pattern shown in the table, what would you expect the temperature increase to be of a 300 g sample?
0 <sup>o</sup>F
6 <sup>o</sup>2
6 <sup>o</sup>F
12 <sup>o</sup>F
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15
×
What state of matter is shown below?
Gas
Solid
Liquid
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15
×
Before leaving home, the pool was 21o C. Later, the pool was warmer. What happened to the molecules?
they lost cold molecules
they became larger
they got closer together
they started moving faster
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heart
Other team wins 15 points!
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gold
Win 50 points!
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rocket
Go to first place!
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lifesaver
Give 10 points!
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thief
Give points!
5
10
15
20
25
×
seesaw
Swap points!
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fairy
Take points!
5
10
15
20
25
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lifesaver
Give 20 points!
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monster
Reset all scores!
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magnet
Take 5 points!
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gift
Win 5 points!
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thief
Give points!
5
10
15
20
25
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trap
No points!
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seesaw
Swap points!
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shark
Other team loses 15 points!
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baam
Lose 25 points!
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15
×
INDEPENDENT VARIABLE - YOU CONTROL Which statement below would be an independent variable
Test score on the phase change critical juncture
Time studying for the phase change critical juncture
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15
×
How does kinetic energy change if molecules move faster?
it would depend on the molecule
it would not change
it would increase
it would decrease
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15
×
Why will these ice samples not melt at the same rate even when they are exposed to the same amount of heat?
Adding heat will increase the kinetic energy at the same rate b/c of mass
Adding heat will increase the kinetic energy at different rates b/c of mass
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15
×
JT has a substance moving in place in a closed container. What happens if he transfers heat into the closed container?
molecules move faster and the substance would be a solid
molecules move slower and the substance would be a liquid
molecules move faster and the substance would be a liquid
molecules move slower and the substance would be a solid
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15
×
Lulu heated up 3 identical containers on a stove and recorded their increase in temperature. What explains the results?
More energy was added to the 100 g sample so it increased more
The same energy was added to all & the increas was proportional to the mass
More energy was added to the 400 g sample because it had more mass
Energy was removed from the 400 g sample to give it a lower temperature
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15
×
Two substances were in liquid form and got energy transferred out. Substance 1 changed, but substance 2 didn't. Why?
substance 1 had stronger attraction; molecules now move away from each oth
substance 1 had stronger attraction; molecules now move in place
substance 1 had weaker attraction; molecules now move around each other
substance 1 had weaker attraction; molecules now move in place
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15
×
If the same amount of thermal energy is added to these ice samples, which will melt first and why?
Ice sample 3 because with more mass, kinetic energy will rise faster
Ice sample 1 because with less mass, kinetic energy will rise faster
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15
×
What state of matter is shown below?
Gas
Solid
Liquid
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