Atomic Structures (1)

Protons

Positively charged particles in an atoms nucleus

Neutrons

Neutrally charges particle in an atoms nucleus

Electrons

Negatively charged particles which float OUTSIDE and AROUND an atoms nucleus

Isotopes

When an element has a different mass/ number of neutrons from its accepted value

Ions

When an element has a positive or negative charge based on its number of electrons (MORE or LESS than the # of protons)

more than protons- negative charge

less than protons- positive charge

Nucleus

the center of an atom- contains protons and neutrons

makes up the majority of the atoms mass

Atomic #

the # of protons in an atom

Atomic Mass

the average mass of an element across all isotopes

Mass #

the # of protons + neutrons in a given type of an element