1.1 Chemistry----the central science full of practicability and creativity (1)what is chemistry the study of the properties,compositions and structures of the substances and of the reactions that transform them into other substances (2)Essence and station of chemistry a science full of practicability and creativity Paper making technique(汉朝) ●ancient Chinese Explosive powder(唐朝) technical invention Ceramics(始于汉.唐) Metallurgy(治金，炼丹) Dyeing(染色) (1) what is chemistry ? the study of the properties, compositions and structures of the substances and of the reactions that transform them into other substances 1.1 Chemistry---- the central science full of practicability and creativity (2) Essence and station of chemistry a science full of practicability and creativity ancient Chinese technical invention Paper making technique （ 汉朝) Explosive powder (唐朝) Ceramics (始于汉. 唐) Metallurgy (冶金, 炼丹） Dyeing (染色)