PROTONProton: the positively charged particle found in the nucleus of an atom.
PERIODPeriods are the rows going across. They are numbered from 1-7 and indicate how many energy levels (shells/orbitals) the element has.
ATOMAn atom is the basic unit of an
element!
Each atom has a nucleus
surrounded by electrons.
NEUTRONNeutrons are found in nucleus with protons. Neutrons have NO charge.
ELECTRONElectrons surround the nucleus of an
atom in the electron cloud.
Electrons have a (-) Negative charge!
VALENCE ELECTRONS
The electrons found in the outer most energy level/shell/orbital.
ISOTOPE Isotopes are elements that have more neutrons than the original element but still share the same chemical properties.
NUCLEUS The dense center of
an atom.
Where the protons and neutrons are
located.
GROUPThe columns on
the periodic table.
Groups indicate how many valence
electrons each element in that column have.
ATOMIC MASS
Protons (or atomic number)
+ Neutrons = Atomic Mass!