6th+Period+Science+notes

__**8-31-11**__ The Atomic number is equal to the number of protons in a given Atom. Protons= A positivly charged subatomic particle. Neutrons=Subatomic particles with NO charge. Electrons=Negativly charged Subatomic particles. __**Model of the Atom**__ **__Boron Model__**

PERIOD=Is equal to the number of Electron shells that an Atom has. ATOMIC MASS= ist the number of Protons plus the number of Neutrons. ATOM= is the basic building block of everything. Electron Shells=Energy Levels NEUTRAL ATOM =Same number of Protons, Neutrons, and Electrons. ISOTOPE=When you have an Atom with a different number of __Neutrons.__ ION=Different number of Electrons, resulting in a change. VALENCE ELECTRON=Is how many Electrons are located on an Atoms outer Electron Shell.