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Team 2
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Teams
Name
Score
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lifesaver
Give 15 points!
Oops!
×
rocket
Go to first place!
Okay!
×
shark
Other team loses 25 points!
Okay!
×
lifesaver
Give 20 points!
Oops!
×
trap
No points!
Oops!
×
rocket
Go to first place!
Okay!
×
shark
Other team loses 5 points!
Okay!
×
thief
Give points!
5
10
15
20
25
×
seesaw
Swap points!
Oops!
×
shark
Other team loses 10 points!
Okay!
×
rocket
Go to first place!
Okay!
×
banana
Go to last place!
Oops!
15
×
Which sequence correctly shows how the understanding of atomic structure changed?
Solid sphere → Electron inside → Charged nucleus
Nucleus → Electron → Atom
Electron → Nucleus → Atom
Nucleus → Solid sphere → Electron cloud
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15
×
What did all four scientists ultimately show about atomic models?
They are guesses
They never change
They improve as new evidence appears
They are all correct
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15
×
In Rutherford’s experiment, what would the plum-pudding model have predicted?
All alpha particles bounce back
Even scattering
Almost no deflections
Heavy deflections
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15
×
Which observation from Rutherford supported the existence of a nucleus?
A few alpha particles rebounded
Cathode rays glowed
Oil droplets floated
Electrons traveled in circles
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15
×
Millikan’s data showed that the electron’s charge was always a multiple of one small value. This proved that charge is:
Increasing
Constant and quantized
Changing with temperature
Random
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15
×
Which scientist provided the first experimental evidence that atoms are not solid spheres?
Millikan
Thomson
Dalton
Rutherford
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15
×
Millikan adjusted the electric field until droplets stopped falling. What did this allow him to determine?
The droplet’s volume
The nucleus’s size
The electron’s charge
The speed of the droplet
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15
×
What evidence showed Thomson that the particles in the cathode ray had mass?
They traveled in circles
They bounced off the tube walls
They cast a shadow
They emitted light
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×
heart
Other team wins 20 points!
Oops!
×
fairy
Take points!
5
10
15
20
25
×
gift
Win 25 points!
Okay!
×
thief
Give points!
5
10
15
20
25
15
×
Which scientist’s work allowed the calculation of the electron’s mass?
Rutherford + Dalton
Thomson alone
Thomson + Millikan
Millikan alone
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15
×
The fact that a few alpha particles bounced back suggested the nucleus was:
Spread out
Dense and positive
Very large
Negatively charged
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15
×
According to Dalton, what combines in whole-number ratios to form compounds?
Electrons
Elements
Nuclei
Atoms
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15
×
What charge did Thomson conclude the particles in the cathode ray carried?
Neutral
Negative
Positive
Changing
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×
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