资源描述：
《生活中的化学(英语论文)》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、ChemistryindailylifeAnintroductionChemistry isanatural science, mainlysearchthe materialcomposition, properties, structureandchanging. It istheprimarymethods torecognizingandrebuildingthephysicalworld.Our dailylifeisvarious, richandcolorful. With theimprovementofpeople'slife
2、, moreandmorepeoplepreferhealth, highqualitylife.People's basiciscloselyrelatedto Chemistry.Itcanbesaidthat wecannotlivewithoutchemistry.Modernchemistryincludinginorganicchemistry,organicchemistry,physicalchemistry,analyticalchemistryandpolymerchemistry.(无机化学、有机化学、物理化学、分析化学与
3、高分子化学).ApplicationinthebasicnecessitiesoflifeTheuseofiodizedsalt.Iodineisanessentialnutritionalelement,long-termiodinedeficiencycanleadtobigneckdisease,intakeiodizedsaltisthemostsimple,economic,effectivemethodtotreatthisdisease.Iodizedsaltcontainingsodiumchloride(氯化钠)andpota
4、ssiumiodate（碘酸钾）.Potassiumiodateprovidetheiodinethathumanbodyneeds,butthepotassiumiodateisnotstableandeasytodecomposewhenitistobeheatedorlight,thusaffectingtheintakeofiodine.Sowhenwecookingshouldpayattentiontothat:afteraddingsaltweshouldtakeoutthefoodquickly,notlongtimetoste
5、wedorstirfired.Nowthemost convenientmeansoftransportation istheautomobile, butthecar willproduce alotofexhaustemissions intheprocessofrunning.Whatkindofharmdoescarexhaust has tohumanhealth?Carbonmonoxideisacolorless(无色),odorless（无臭）,tasteless（无味）, andnonirritating（无刺激性）toxic
6、gas.Itwiththeair throughthelungs intothebloodcirculation, combinedwiththehemoglobin(血红蛋白)intheblood,reducingtheoxygencarryingcapacityofredbloodcells,effectsofrespiration andheart, brainfunction.Longterminhalationofnitrogenoxides candestroythelung tissue(肺组织),nitrogenoxides c
7、an causetissue hypoxia（缺氧）andinjurythe systemictissue.Nowadays, theadditiveischemicalsynthesis thatcanimprovefoodquality, prolongthepreservationperiodoffoodinordertoquickenfoodprocessingand increasefood nutrition.Forexample,acidityregulator,colorprotectingagent,enzymeprepara
8、tions,flavoringagent,anticakingagent,defoamingagent,antioxidant,bleach,leav
