Modelling the Atom Flashcards
1
Q
mass of a proton
A
1
2
Q
charge of proton
A
+1
3
Q
mass of neutron
A
1
4
Q
charge of neutron
A
0
5
Q
mass of electron
A
1/2000
6
Q
charge of electron
A
-1
7
Q
how many electrons r in the 1st shell
A
2
8
Q
how many electrons r in the 2nd shell
A
8
9
Q
how to workout mass number
A
proton + neutron
10
Q
What is the atomic mass?
A
amount of protons and electrons, which are in the same amount
11
Q
how do you work out neutrons?
A
top number - bottom number
12
Q
What is the top number in an element?
A
mass number
amount of protons and neutrons
13
Q
what is the bottom number in an element?
A
atomic mass
proton and electrons which are the same
