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15
×
Protons have the same mass as ...?
neutrons
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15
×
That is the distribution of electrons in the 3rd level?
2 6 10
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15
×
Dalton believed that atoms of the same element were all the same. In what way are they the same?
They have the same mass, size and properties
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25
×
In which sublevel is the last electron of a calcium atom (Z=20)?
3p
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20
×
Compounds are always made up of atoms of the same element?
No, for example H2O
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15
×
What did Rutherford call the centre of the atom?
a nucleus
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×
thief
Give points!
5
10
15
20
25
×
shark
Other team loses 20 points!
Okay!
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fairy
Take points!
5
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15
20
25
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baam
Lose 15 points!
Oops!
10
×
Where was Democritus from?
Ancient Greece
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20
×
Dalton believed that matter is made up of indivisible particles that cannot be _________
destroyed
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×
lifesaver
Give 25 points!
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gold
Win 50 points!
Okay!
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gift
Win 20 points!
Okay!
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thief
Give points!
5
10
15
20
25
×
heart
Other team wins 25 points!
Oops!
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fairy
Take points!
5
10
15
20
25
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fairy
Take points!
5
10
15
20
25
×
lifesaver
Give 25 points!
Oops!
10
×
What did Democritus think the world was made up of?
small particles called atoms
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10
×
Can some atoms have more electrons than protons?
Yes
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15
×
Almost all the mass of the atom is in the _________? (in Rutherford's model)
nucleus
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15
×
What is the maximum number of electrons in a p sublevel?
6
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15
×
True or false: Are the atoms X (6 protons and 6 neutrons) and Y (7 protons and 5 neutrons) the same element?
False
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