Matter
Atoms
Protons
Neutrons
Electrons
Nucleus
Atomic Number
Atomic Mass
- Anything that has mass and takes up space (volume)
- Positively charged particles
Neutral particles; have no electric charge
.
Smallest possible unit into which matter can be divide
while still maintaining its properties
The center of an atom
The number of protons in the nucleus of an atom
: Found Outside the nucleus
Number of protons and Neutrons in the nucleus
