make up of an atom Flashcards
1
Q
What does the atomic number show
A
The number of protons
2
Q
What type of charge does a proton have
A
A positive charge
3
Q
Do neutrons have a charge
A
No
4
Q
What 2 things are in the centre of an atom
A
Protons and neutrons
5
Q
What is the centre of an atom called
A
The nucleus
6
Q
What type of charge do electrons have
A
Negative
7
Q
What do you do to find the number of neutrons
A
Neutrons= Mass number-Atomic number
8
Q
How many electrons can fit on the 1st shell
A
2
9
Q
How many electrons can fit on the 2nd shell
A
8
10
Q
How many electrons can fit on the 3rd shell
A
18
11
Q
How do you find the mass of an atom
A
By rounding the atomic weight
