Atoms & Isotopes Flashcards
1
Q
Atom
A
The smallest particle to exist.
2
Q
Proton
A
A positively charged subatomic particle found in the nucleus.
3
Q
Neutron
A
A subatomic particle with no charge found in the nucleus.
4
Q
Electron
A
A subatomic particle with a negative charge orbiting the nucleus.
5
Q
Nucleus
A
A small, dense region containing protons and neutrons in the centre of the atom.
6
Q
Energy levels
A
The shells around the nucleus containing electrons.
7
Q
Atomic number
A
The number of protons in an atom.
8
Q
Mass number
A
The total number of protons and neutrons in the nucleus.
9
Q
Mass number
A
The total number of protons and neutrons in the nucleus.
10
Q
Mass number
A
The total number of protons and neutrons in the nucleus.
