1
Q
What are the charges of protons, neutrons and electrons?
A
Positive, neutral and negative
2
Q
How many electrons are in the first shell of the Bohr model?
A
2 max.
3
Q
How many electrons are in the second and third shell?
A
8 max. each
4
Q
How much do protons weigh?
A
1 amu
5
Q
How much do electrons weigh?
A
0 amu
6
Q
How much do neutrons weigh?
A
1 amu
7
Q
How do you find the number of protons of an element?
A
Above the atomic symbol, the atomic number shows the number of protons
8
Q
What are the diatomic elements?
A
Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine and Iodine
Chemistry Year 9
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