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

sub atomic particle with no charge

two atoms joined together in a molecule

a substance made up of only one type of atom

no charge (neutral)

positive charge

atoms with the SAME atomic number but DIFFERENT mass number due to a difference in the number of neutrons

atoms which have lost or gained electron(s) to become either positively or negatively charged

the smallest particle of an element that can exist on its own

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

the number of protons in the nucleus of an atom

the number of neutrons in the nucleus of an atom

substance made up of two or more different elements that are chemically joined together

the smallest particle of an element that can exist on its own

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

a shared pair of electrons between two non-metal atoms

average mass of all isotopes

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

two atoms joined together in a molecule

relative atomic mas

fluorine, carbon, oxygen, helium, nitrogen, boron,iodine

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

because the noble gases are very stable and have a complete outer shell of electrons

so they become less reactive

force of attraction between particles which holds them together

the way a chemical reacts

the combining power of an atom (the number of bonds a particle can form)

the number of electrons an atom needs to lose or gain to achieve a full outer shell of electrons

the number of groups in the periodic table