Chemical+processes

Put your information below or start a discussion Chinese alchemy 300 - 200 BC - opposites (ying and yang) related now to opposite such as acid-base, metal and non-metal, oxidation-reduction. Wei Po-Yangs' experiments on inorganic materials (AD 140) //Ts'an T'ung Ch'i//
 * From Lost Discoveries by Dick Teresi (2002) Simon and Schuster**