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下列物质中既含有离子键又含有共价键的是（ ）
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高三上学期化学《》真题及答案
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下列关于化学键的说法中正确的是
离子化合物中一定只含有离子键
含有共价键的一定是共价化合物
任何物质中都含有化学键
KOH中既含有共价键又含有离子键
下列物质中①CO2②Ar③SiO2④NaOH⑤NaF⑥KOH⑦CaCl2⑧Na2O2⑨H2O⑩N2只
在下列物质中NaClNaOHNa2SH2O2Na2S2NH42SCO2CCl4C.2H2SiO2Si
下列物质中既含有离子键又含有共价键的是
H2O
KCl
NaOH
HCl
在下列物质中NaOHNa2SNH42S.Na2O2C2H2SiC晶体⑴其中只含有离子键的离子晶体是⑵
下列说法中正确的是
离子化合物中可能含有共价键
共价化合物中可能含有离子键
离子化合物中只含离子键
只含共价键的物质一定是共价化合物
在Cl2KClNH3H2O2NaOHNa2O2等物质中只含有共价键的是______________只
下列物质中既含有离子键又含有共价键的化合物是
NaCl
CH4
KOH
CH3Cl
下列物质既含有离子键又含有共价键的是
SO
2
H
2
O
NaCl
NaOH
下列说法中正确的是
离子化合物中可能含有共价键
共价化合物中可能含有离子键
离子化合物中只含离子键
只含共价键的物质一定是共价化合物
下列关于化学键说法正确的是:
构成单质分子的微粒中不一定含有化学键
只含有共价键的物质一定是共价化合物
NaCl溶于水破坏了离子键，乙醇溶于水破坏了共价键
CaCl2 中既有共价键又有离子键
下列物质中既含有共价键又含有离子键的是
HCl
Na
2
S
MgCl
2
NaOH
下列物质中既含有共价键又含有离子键的是
NaI
CaCl
2
NO
2
KNO
3
下列物质中既含有共价键又含有离子键的是
NaI
CaCl
2
CO
2
KOH
在下列物质中NaOHNa2SNH42SNa2O.2C2H.2SiC.1其中只含有离子键的离子晶体是2
下列物质中中既含有共价键又含有离子键的是:
NaI
CaCl
2
NO
2
KNO
3
下列物质N2H2ONa2O2CaCl2KOHNaF中只含有共价键的物质是______________
下列物质中既含有共价键又含有离子键的是
NaI
CaCl
2
NO
2
KNO
3
1在下列物质中①CO2②KOH③He④BaSO4⑤NaCl其中只含有离子键的是填序号下同既含有离子键
下列说法中正确的是
KOH中含有离子键也含有共价键，属于离子化合物
N
2
属于单质，不存在化学键
MgCl
2
中既含有离子键，又含有共价键
NH
4
Cl中含有共价键，又全部由非金属元素组成，属于共价化合物
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下列有关化学用语表示正确的是
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下列说法正确的是
下列物质的转化在给定条件下能实现的是
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﹣﹣﹣CanIreallygetanapple6plusasarewardifIwinthecompetition? ﹣﹣﹣Absolutely!________. A.Sowillyou B.Italldepends C.Imeanit D.That'sallright
钴及其化合物广泛应用于磁性材料电池材料及超硬材料等领域． 1CoxNi1﹣xFe2O4其中CoNi均为+2可用作H2O2分解的催化剂具有较高的活性． ①该催化剂中铁元素的化合价为． ②图1表示两种不同方法制得的催化剂CoxNi1﹣xFe2O4在10℃时催化分解6%的H2O2溶液的相对初始速率随x变化曲线．由图中信息可知法制取得到的催化剂活性更高Co2+Ni2+两种离子中催化效果更好的是． 2草酸钴是制备钴的氧化物的重要原料．下图2为二水合草酸钴CoC2O4•2H2O在空气中受热的质量变化曲线曲线中300℃及以上所得固体均为钴氧化物． ①通过计算确定C点剩余固体的化学成分为填化学式．试写出B点对应的物质与O2在225℃～300℃发生反应的化学方程式． ②取一定质量的二水合草酸钴分解后的钴氧化物其中Co的化合价为+2+3用480mL5mol/L盐酸恰好完全溶解固体得到CoCl2溶液和4.48L标准状况黄绿色气体．试确定该钴氧化物中CoO的物质的量之比．
8分2015WasaWarmWildYear.What'sNext?2015sawthingsheatupandgetoutofhandandnotjustinpolitics.ArecordwarmDecemberraisedaveragetemperaturesenoughtomake2015thesecondhottestyearonrecordinthecontiguousUnitedStatesaccordingtotheNationalOceanicandAtmosphericAdministration'sNationalClimateMonitoringAnnualReportwhichwasreleasedThursday.TheUnitedNationshadpreviouslyreportedthat2015wasshapinguptobethewarmestyearonrecordforthewholeplanet.LastyearwasalsothethirdwettestonrecordintheU.S.andsawtenweather﹣orclimate﹣relateddisastersthateachcausedatleast﹩1billionindamageintheU.S.andkilledatotalof155people.Theseincludeadroughttwofloodsfiveseverestormsawildfireandawinterstorm.TheaverageU.S.temperaturewas54.4°F2.4°Fabovethe20thcenturyaverageandsecondonlyto2012'srecordwarmth.Thiswasalsothe19thconsecutiveyearwithaveragetemperaturesabovetheaverageforthecentury.Everystatereportedabove﹣averageannualtemperatures.ThewarmingwasparticularlypronouncedacrossmostoftheeasternhalfofthecountryinDecemberwhenmanyplacessawtemperatures30degreesabovenormalandmanyrecordswereset.ThismirroredchangesseenintheArcticthatmonthwhentemperaturesspikedto50degreesabovenormal.PartofthiswarmingwasdrivenbyastrongElNiñoorperiodicwarminginthePacificOceanbutsomeofitcanalsobeattributedtoglobalwarmingsaysmeteorologistEricHolthauswhowasnotinvolvedwiththefederalreport.TheanalysiscomeslessthanamonthaftertheU.S.and194othercountriessignedanagreementinParistomoreaggressivelycountertheeffectsofclimatechange.'EvenifalltheinitialtargetsinParisaremetwe'llonlybepartofthewaytherewhenitcomestoreducingcarbonfromtheatmosphere'saidPresidentBarackObamaatthetime.Stilltheagreementrepresented'aturningpoint'bysettingup'thearchitecture'fordoingsohesaid.NOAA'sclimatemonitoringcenterdoesn'tissuepredictionsforfutureweatherbuttheagency'sClimatePredictionCenterdoes.Thatteam'sforecastforthenextthreemonthscallsforwarmer﹣than﹣averagetemperaturesinmuchofthecountryalthoughpartsofTexasandtheSoutheastmaybealittlecoolerthanusual.AsLancasterUniversityProfessorGailWhitemantoldtheWeatherChannel'climatechangemeansextremeweatheristhenewnormal.'1AccordingtothepassagethewarmestyearintheU.S.isA.2014B.2015C.notmentionedD.20122Accordingtothepassagewhichstatementisright?A.2015wasthethirdwettestyearonrecordinthewholeplanet.B.Tenweather﹣orclimate﹣relateddisastersintheU.S.includeadroughttwofloodsfourseverestormstwowildfiresandawinterstorm.C.The20thcenturyaveragetemperatureintheU.S.was52°F.D.ThewarmingwaspronouncedacrossmostofthewesternhalfofthecountryinDecember.3TheagreementtheUS.and194countriessignedaimedtoA.reducecarbonfromtheatmosphereB.countereffectsofclimatechange.C.setupthearchitectureD.findartificialwaystocooldowntheextremeweather4WhatdoesProfessorGailWhitemanmeaninthefuture?A.Extremeweatherwillbecommoninthefuture.B.Climatechangewillbenormal.C.Extremeweatherwillbenormalifwedon'ttakemeasures.D.Climatechangeleadtoextremeweather.
Lifeislikeawindingpathsurroundedbyflowersbutterfliesanddeliciousfruits______manyofusspendmuchtimelookingforhappinessaroundthenextcorner A.therefore B.though C.moreover D.otherwise
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