Atoms Flashcards
1
Q
What are atoms?
A
Make up everything around us - we call this matter
Mostly empty space
2
Q
What are protons?
A
Positively charged, determines type of atom
3
Q
What are neutrons?
A
Neautral charge
4
Q
What are electrons?
A
Negatively charged, fly around the nucleus, much lighter than other particles.
5
Q
What is the small number at the top?
A
The small number at the top is the number of protons
6
Q
How to calculate the number of protons?
A
Atomic number
7
Q
How to work out the number of neutrons ?
A
Mass number - atomic number
8
Q
How to work out the number electrons?
A
Electrons is always the same number as the protons
9
Q
Atomic number position?
A
Lower number
10
Q
Higher number ?
A
Mass number
