Atoms Flashcards
1
Q
Name the 3 particles inside an atom
A
Protons
Neutrons
Electrons
2
Q
Where are the electrons in terms of the nucleus
A
Far apart and orbiting the nucleus
3
Q
What makes up the nucleus of an atom
A
Protons and neutrons
4
Q
How do you work out the neutrons in an atom
A
Mass number - atomic number
5
Q
How do you work out the protons and electron in an atom
A
= the atomic number
6
Q
How does an isotope differ from a normal atom
A
It has more neutrons in the nucleus
7
Q
How many electrons does shell 1 hold
A
2
8
Q
How many electrons does shell 2 hold
A
8
9
Q
How many electrons does shell 3 hold
A
8
10
Q
How many electrons does shell 4 hold
A
2
11
Q
How do you draw electron structure
A
The electrons fill the shells closest to the nucleus unless there is no space left in those shells
