求一个关于化学发展史的英语演讲RT,要求是用于高一课前演讲,-查字典问答网
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  求一个关于化学发展史的英语演讲RT,要求是用于高一课前演讲,不要太长,3分钟以内,不要有太多生词

  求一个关于化学发展史的英语演讲

  RT,要求是用于高一课前演讲,不要太长,3分钟以内,不要有太多生词

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2020-02-07 01:18
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贾智宏

  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.

2020-02-07 01:22:34

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