Eversincehumanbeings,thechemicalwillbeformedadeepbondwithhumans.Firebyrubbingsticks,cookfoodwithfire,firingpottery,smeltingbronzeandiron,arechemicaltechnology.Itistheseapplications,greatlypromotedthedevelopmentofsocialproductiveforcesatthattimebecomeasymbolofhumanprogress.

　　Today,thechemicalasabasisfordiscipline,inthescienceandtechnologyandallaspectsofsociallife,areplayinganincreasingrole.Fromancienttimes,alongwiththeprogressofhumansociety,chemical,historicaldevelopmentexperienceofwhattimes?

　　Periodofancientchemicalprocesses.Atthistimethehumanpottery,metallurgy,brewing,dyeingandotherprocesses,mainlyinthepracticalexperienceunderthedirectinspirationcameafterthenumberofyearstoexplore,chemicalknowledgehasnotbeenformed.Thisisachemistryinfancy.

　　Periodofalchemyandpharmaceuticalchemistry.From1500BCtoAD1650,alchemywarlockandalchemistwho,inthePalace,inthechurches,intheirownhome,inthedeepforestsofthesmoky,inordertoobtainimmortalityofthepanacea,inordertoobtainglorywealthofgold,startedthefirstchemistryexperiment.Records,summingupalchemybooks,inChina,Arabia,Egypt,Greecehasalot.Haveaccumulatedalotofmaterialduringthisperiodbetweenthechemicalchange,chemicalpreparationsforthefurtherdevelopmentofarichmaterial.Thisisthechemicalinthehistoryofthestrainsofourbreathtakingscene.Later,alchemy,alchemy,riseandfallseveraltimessothatpeoplecanseeitmoreabsurdside.Chemicalshiftinmedicineandmetallurgyhavebeengiventheproperplay.InEuropeduringtheRenaissance,thepublicationofseveralbooksonchemistry,forthefirsttimewiththe"chemical"term.English,chemistryoriginatedinalchemy,thealchemy.chemiststillhasatworelatedmeanings:chemistsandpharmacists.Thesecanbesaidthatchemistrygrewoutofalchemyandtheculturalheritageofthepharmaceuticalindustry.

　　Phlogistonchemistryperiod.From1650to1775,withthemetallurgicalindustryandlaboratoryexperience,thepeoplehavecomeupperceptualknowledgethatthecombustiblematerialtoburnbecauseitcontainsphlogiston,thecombustionprocessiscombustibleintheprocessofreleaseofphlogiston,phlogistonreleasedcombustiblelaterreducedtoashes.

　　Quantitativechemicalperiod,whiletheperiodofModernChemistry.Beforeandafter1775,Lavoisierquantitativechemicalexperimentdescribedtheoxidationtheoryofcombustion,creatingaperiodofquantitativechemistry.Duringthisperiodtheestablishmentofanumberofbasiclawsofchemistry,madeofatomictheory,periodiclawofelementsfoundinthedevelopmentoftheorganicstructuretheory.Allofthisforthedevelopmentofmodernchemistrylaidasolidfoundation.

　　Scienceandmutualpenetrationperiod,whiletheperiodofmodernchemistry.Theearlytwentiethcentury,thedevelopmentofquantumtheorytochemistryandphysicshaveacommonlanguagetoaddressmanyofthechemicalontheoutstandingissues;ontheotherhand,chemicalYouxianginfiltrationofsuchdisciplinesasbiologyandgeology,sothatproteins,enzymesstructurehasbeengraduallysolved.