the combining power of an atom (the number of bonds a particle can form) it is also the number of electrons an atom needs to lose or gain to achieve a full outer shell of electrons

has a full outer shell of electrons

atoms which have lost or gained electrons to become either positively or negatively charged

positively charged

negatively charged

the sum of protons and neutrons in the nucleus of an atom

two or more non-metal atoms that are chemically joined together by covalent bonds

sub atomic particle with no charge (neutral)

sub atomic particle with a positive charge

a substance made up of only one type of atom

when electrons are transferred from a metal atom to a non-metal atom and the resulting two oppositely charged ions are attracted to each other

two atoms joined together in a molecule

fluorine, chlorine, oxygen, hydrogen, nitrogen, bromine, iodine

sub atomic particle with a negative charge found outside the nucleus in electron shells

force of attraction between particles which holds them together