初中常见相对原子质量及相对分子质量资料.doc

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1、初中常见相对原子质量及相对分子质量相对原子质量名称符号相对原子质量名称符号相对原子质量名称符号相对原子质量氢H1铝Al27鉄Fe56氦He4硅Si28铜Cu63.5碳C12磷P31锌Zn65氮N14硫S32钡Ag108氧O16氯Cl35.5银Ba137氟F19氩Ar40金Pt195氖Ne20钾K39铂Au197钠Na23钙Ca40汞Hg201镁Mg24锰Mn55碘I127相对分子质量物质化学式相对分子质量物质化学式相对分子质量一氧化碳CO28氢氧化钾KOH56四氧化三铁Fe3O4232碳酸钙CaCO3100氧化铝Al2O3102硫酸亚铁FeSO4152盐酸HCl36.5碳酸钠Na

2、2CO3106氢氧化钙Ca(OH)274硫酸铜CuSO4160硫酸钙CaSO4136硝酸铵NH4NO380氯化亚铁FeCl2127过氧化钠Na2O278硫酸钠Na2SO4142氯化铵NH4Cl53.5氯化铜CuCl2135二氧化硫SO264硫酸锌ZnSO4161氧化钙CaO56氯酸钾KClO3122.5氧化亚铁FeO72过氧化氢H2O234水H2O18氧化镁MgO40碳酸H2CO362二氧化碳CO244氢氧化铜Cu(OH)298三氧化二铁Fe2O3160氯化钙CaCl2111五氧化二磷P2O5142氯化铁FeCl3162.5硫酸H2SO498氯化钠NaCl58.5氢氧化钠NaOH

3、40氯化钾KCl74.5氧化铜CuO80氯化锌ZnCl2136氢氧化镁Mg(OH)258高锰酸钾KMnO4158一般现在时、现在进行时、一般将来时、一般过去时专项练习 一单项选择题1._____he_____totheparkat6:30inthemorning?No,he____.A.Does;goes;doesB.Does;go;doesn’tC.Does;go;does2.Whatcolour_____you_____thisbookcase?I_____itpink.A. are;goingtopaint;amgoingtopaintB. do;paint;paintC.

4、 did;paint;painted 3.Timalways_____apictureathome.He_____acarnow.A.draws;isdrawingB.draw;drawC.draws;draw4.Sheusually_____herfriends.Theyoften_____tea.A.see;drinkB.sees;drinksC.sees;drink5.Heusually_____thedishesatnight,buttonighthe_____clothes.A.wash;washB.washes;isgoingtowashC.iswashing;was

5、hes6.Mr.Greenusually_____hisnewspaperintheevening,butheandhiswife_____televisionyesterdayevening.A.reads;watchesB.reads;isgoingtowatchC.reads;watched7.Wherearethemanandthewoman?They_____nearthetree.A.sitB.satC.aresitting8._____yourpenpal_____diving?No,he_____.He______writingstories.A.Does;lik

6、e;doesn’t;likesB. Does;likes;doesn’t;likeC.Do;like;don’t;likes9._____you_____fishingyesterday?No,we_____.A.Does;go;doesn’tB.Did;go;didn’tC.Do;go;don’t10.Openthewindow,please.Look!He_____itA.opensB.isopenningC.isopening11.Iusually_____somemilkeveryday.ButI_____coffeeyesterday.A.drink;drankB.is

7、drinking;drinkC.drank;amdrinking12.Mr.Greenoften_____hisnewspapersatnight.Buthe_____aninterestingbooktonight.A.reads;readsB.reads;readC.reads;isgoingtoread13.Theoldman_____playingsportsinthepark.He_____morningexercisenow.A.likes;isdoingB.like