Atomic Structure Keyword flashcards

Front

Atom

Back

The smallest part of an element that can exist

Front

Proton

Back

A positively (+1) charged sub-atomic particle found in the nucleus of the atom

Front

Neutron

Back

A neutral (0 charge) sub-atomic particle found in the nucleus of the atom

Front

Electron

Back

A negatively (-1) charged subatomic particle found in electron shells around the nucleus of the atom

Front

Relative atomic mass (Ar)

Back

The average mass of an atom of an element relative to the mass of an atom of carbon-12

Front

Mass Number

Back

The total number of protons AND neutrons in the nucleus of an atom

Front

Isotope

Back

An atom of an element that has the same number of protons but a different number of neutrons

Front

Molecule

Back

A group of at least 2 atoms, covalently bonded together

Front

Atomic number

Back

The number of protons in the nucleus of the atom.