0
Q
Electrons
A
The negatively charged particles
Electron // e- // charge: 1- // AMU 1/1,836
1
Q
Atom
A
The smallest particle of an element
2
Q
Nucleus
A
Rutherford inferred that the atoms positive charge must be clustered by a tiny region
3
Q
Protons
A
Positively charged particles in the nucleus of an atoms
Protons // p+ // charge: 1+ // AMU 1
4
Q
Energy level
A
The specific amount of energy an electron has
5
Q
Neutron
A
A particle in the nucleus that is electrically neutral
Neutron // n // charge: 0 // AMU 1
6
Q
Atomic number
A
The unique number of protons in the nucleus of an atom
7
Q
Isotopes
A
Atoms with the same number of protons and a different number of neutrons
8
Q
Mass number
A
The sum of protons and neutrons in the nucleus of an atom
