Physicalandinstrumentalmethodsareanalyticalmethodsbaseduponmeasurementsofphysicalpropertiesandmeasurementswithinstruments.Separationofthepropertiesofmatterintophysicalandchemicalpropertiesisarbitrarybutoftenconvenient.Aphysicalpropertycanbedefinedasaquali (共 1578 字) [閱讀本文] >>