Atoms and the Periodic Table

Front

the smallest particle that still can be considered an element

Back

atom

Front

a series of models that developed from experimental evidence

Back

atomic theory

Front

negatively charged particles, discovered by Thomson

Back

electron

Front

the dense center of an atom

Back

nucleus

Front

a positively-charged particle in the atom's nucleus

Back

proton

Front

A particle with no charge in the nucleus of the atom.

Back

neutron

Front

The number of protons in the nucleus of an atom

Back

atomic number

Front

average mass of all the isotopes of that element

Back

atomic mass

Front

a chart showing all of the elements arranged according to their properties

Back

periodic table

Front

A one or two letter abbreviation for the element

Back

chemical symbol