Atoms!! Flashcards
1
Q
The smallest unit of an element
A
Atom
2
Q
Electron
A
A subatomic particle that has has a negative charge
3
Q
An atoms central region
A
Nucleus
4
Q
A subatomic particle that has a positive charge
A
Proton
5
Q
A subatomic particle that has no charge
A
Neutron
6
Q
Area outside of the nucleus. Contains electrons
A
Electron cloud
7
Q
The number of protons in the nucleus of an atom
A
Atomic number
8
Q
Number of protons+neutrons together
A
Mass number
