Atoms and Periodic Table

Sub-atomic particle with a positive charge

It is where neutrons and protons are locatedwithin the atom

Represents the number of protons of an element 

Has no electrical charge

Sub-atomic particle with a negative charge

States that matter is composed of tiny littleunits called atoms

The most basic piece of matter that retains anelements properties

 Is composed of one type of atom

The sum of protons and neutrons

Space around the nucleus .