Atomic Structure Flashcards
1
Q
Atom
A
The smallest unit of an element
2
Q
Electron
A
Subatomic particle that has a negative change
3
Q
Nucleus
A
In physical science , an atoms central region
4
Q
Proton
A
A subatomic particle that has a positive charge ; contains protons and neutrons
5
Q
Neutron
A
A subatomic particle that has no charge
6
Q
Electron cloud
A
A region around the nucleus a atom where electrons are found
7
Q
Atomic number
A
The number of protons in the nucleus of an atom and identifies the atom
8
Q
Mass numbers
A
The sums of protons and neutrons
