reactive participating readily in reactions; "sodium is a reactive metal"; "free radicals are very reactive"
chemical science,
chemistry the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
natural philosophy,
physics the science of matter and energy and their interactions; "his favorite subject was physics"
inactive not active physically or mentally; "illness forced him to live an inactive life"; "dreamy and inactive by nature"
inert,
neutral,
indifferent slow and apathetic; "she was fat and inert"; "a sluggish worker"; "a mind grown torpid in old age"
noble having or showing or indicative of high or elevated character; "a noble spirit"; "noble deeds"
