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Teams
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banana
Go to last place!
Oops!
×
fairy
Take points!
5
10
15
20
25
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gift
Win 20 points!
Okay!
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baam
Lose 20 points!
Oops!
15
×
In Rutherford's model, where are the protons, neutrons and electrons?
Protons and neutrons in the centre, electrons outside
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15
×
That is the distribution of electrons in the 3rd level?
2 6 10
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10
×
Where was Democritus from?
Ancient Greece
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monster
Reset all scores!
Oops!
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fairy
Take points!
5
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25
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rocket
Go to first place!
Okay!
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thief
Give points!
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25
15
×
What can you find inside the atom, between the nucleus and the electrons? (in Rutherford's model)
nothing, that space is empty
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15
×
What did Rutherford call the centre of the atom?
a nucleus
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15
×
Describe Daltons atomic model
He thought that atoms are tiny hard spheres
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15
×
What is the electric charge of electrons?
negative charge
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15
×
True or false: Isotopes can be stable and unstable.
True
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10
×
Can some atoms have more electrons than protons?
Yes
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25
×
When an atom has less electrons that protons, it is called a __________?
cation
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15
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True or false: Atoms X (Z=19 A=40) and Y (Z=20 A=40) are isotopes.
False
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thief
Give points!
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25
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star
Double points!
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rocket
Go to first place!
Okay!
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thief
Give points!
5
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25
15
×
Thomson said that atoms are neutral because ...?
the number of positive protons is equal to the number of negative electrons
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20
×
True or false: Stable isotopes break up over time emitting particles or electromagnetic radiation.
True
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