chemical substance
matter of constant composition best characterized by the entities (molecules, formula units, atoms) it is composed of and characterized by physical properties like density
en-GB/ˈkɛmɪkl ˈsʌbstəns/
en-US/ˈkɛmɪkəl ˈsʌbstəns/
matter of constant composition best characterized by the entities (molecules, formula units, atoms) it is composed of and characterized by physical properties like density