Atoms Flashcards
1
Q
The smallest unit of an element
A
Atom
2
Q
A subatomic particle that has a positive charge
A
Proton
3
Q
A subatomic particle that has a negative charge
A
Electron
4
Q
An atoms central region that is made up of protons
A
Nucleus
5
Q
A subatomic particle that has no charge
A
Neutron
6
Q
A region around the nucleus contains the electrons
A
Electron cloud
7
Q
A number of protons identifies an atom
A
Atomic number
8
Q
The sum of the number of protons and neutrons
A
Mass number
