Atomic Structure Vocab/study Guide 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
Contains protons and neutrons
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
A region around the nucleus of an atom where electrons are found
A
Electron cloud
7
Q
The number of protons in the nucleus of an atom identifies the atom
A
Atomic number
8
Q
The sum of the numbers of protons and neutrons
A
Mass number
