Atomic Structure Vocab Flashcards
1
Q
The smallest unit of an element
A
Atom
2
Q
A subatomic particle that has a negative charge
A
Electron
3
Q
An atoms central region, contains protons and neutrons
A
Nucleus
4
Q
A subatomic particle, with positive charge
A
Proton
5
Q
A subomatic particle that has no charge
A
Neutron
6
Q
A region around the nucleus of an atom
A
Electron cloud
7
Q
The number of protons 8n the nucleus of an atom
A
Atomic number
8
Q
The sum of the numbers of protons in the nucleus of an atom
A
Mass number
