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合成导电高分子材料PPV的反应: 下列说法正确的是( )
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高分子材料是以高分子化合物为基材的一大类材料的总称分为天然高分子材料和合成高分子材料其分类方式是按划
组成
特性
来源
用途
下列关于新型有机高分子材料的说法中不正确的是
高分子分离膜应用于食品工业中,可用于浓缩天然果汁、乳制品加工、酿酒业等
复合材料一般是以一种材料作为基体,另一种材料作为增强剂
合成高分子材料制成的人工器官一般都受到人体的排斥作用,难以达到生物相容的程度
导电塑料是应用于电子工业的一种新型有机高分子材料
高分子材料按来源可分为天然高分子材料如淀粉半合成高分子材料如羧甲基淀粉合成高分子材料如热固性树脂
下列关于合成高分子化合物的说法正确的是
涤纶、锦纶、蚕丝都属于合成纤维
塑料、合成树脂和合成橡胶被称为“三大合成材料”
酚醛树脂是酚类物质和醛类物质加聚而成的高分子化合物
“尿不湿”中的高吸水性树脂属于功能高分子材料
下列关于新型有机高分子材料的说法中不正确的是
高分子分离膜应用于食品工业中,可用于浓缩天然果汁、乳制品加工、酿造业等
复合材料一般是以一种材料作为基体,另一种材料作为增强剂
导电塑料是应用于电子工业的一种新型有机高分子材料
合成高分子材料制成的人工器官都受到人体的排斥作用,难以达到生物相容的程度
合成导电高分子化合物PPV的反应为下列说法正确的是
PPV是聚苯乙炔
该反应为缩聚反应
PPV与聚苯乙烯的最小结构单元组成相同
1 mol
最多可与2 mol H
2
发生反应
下列对高分子化合物的认识不正确的是
从实验中测得某种高分子化合物的相对分子质量只能是平均值
有机高分子化合物称为聚合物或高聚物,是因为它们大部分是由小分子通过聚合反应而制得的
对于一块高分子材料,n是一个整数值,因而它的相对分子质量是确定的
高分子材料可分为天然高分子材料和合成高分子材料两大类
高分子材料是以高分子化合物为基材的一大类材料的总称分为天然高分子材料和合成高分子材料其分类方式是按划
组成
特性
来源
用途
下列关于高分子化合物的说法中正确的是
多糖、油脂、蛋白质都是天然有机高分子化合物
塑料、合成纤维和橡胶都属于合成高分子材料
高聚物
的形成过程为加聚反应
合成酚醛树脂
的单体是苯酚和甲醇
合成导电高分子材料PPV的反应下列说法中正确的是
合成PPV的反应为加聚反应
PPV与聚苯乙烯具有相同的重复结构单元
和苯乙烯互为同系物
通过质谱法可测定
的相对分子质量
下列对有机高分子化合物的认识不正确的是
有机高分子化合物称为聚合物,是因为它们大部分是由小分子聚合而成 的
有机高分子化合物的相对分子质量很大,因而,其结构都很复杂
高分子材料可分为天然高分子材料和合成高分子材料两大类
高分子材料的强度一般都比较大。
合成导电高分子材料PPV的反应如图所示下列说法正确的是
PPV是聚苯乙炔
该反应为缩聚反应
PPV与聚苯乙烯的最小结构单元组成相同
1 mol
最多可与2 mol H
2
发生反应
高分子材料的合成与应用使我们的生活变得更加丰富多彩下列关于高分子材料的说法正确的是
聚乙烯结构中存在碳碳双键
聚乙烯可由乙烯通过取代反应制得
聚乙烯与聚氯乙烯都是合成高分子材料
聚氯乙烯可由氯气与乙烯通过加聚反应制得
下列高分子材料中不是按来源分类的是
天然高分子材料
半合成高分子材料
合成高分子材料
高分子基复合材料
高分子材料是由相对分子质量很大的大分子组成的材料可分为天然半合成和合成高分子材料其分类方式是按划分的
组成
特性
来源
用途
合成导电高分子材料PPV的反应下列说法正确的是
该反应为缩聚反应
PPV是聚苯乙炔
PPV与聚苯乙烯的最小结构单元组成相同
1 mol
最多可与2 mol H
2
发生反应
合成导电高分子化合物PPV的反应为下列说法正确的是
PPV 是聚苯乙烯
该反应为加聚反应
属于芳香烃
1mol
最多可与5molH
2
发生反应
合成导电高分子化合物PPV的反应为 下列说法正确的是
PPV是聚苯乙炔
该反应为缩聚反应
PPV与聚苯乙烯的最小结构单元组成相同
1mol
最多可与2molH2发生反应
合成导电高分子材料PPV的反应如下有关此反应说法中正确的是
合成PPV的反应为加聚反应
PPV与聚苯乙烯具有相同的重复结构单元
和苯乙烯互为同系物
通过质谱法测定PPV的平均相对分子质量,可得其聚合度
合成导电高分子材料PPV的反应下列说法中正确的是
合成PPV的反应为加聚反应
PPV与聚苯乙烯具有相同的重复结构单元
和苯乙烯互为同系物
通过质谱法测定PPV的平均相对分子质量,可得其聚合度[来
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下列有关分子原子的说法中错误的是
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实验室有三瓶无色液体分别可能是水酒精过氧化氢溶液某兴趣小组欲加以鉴别请你帮助他们完成实验方案.1通过闻气味的方法首先能鉴别出来的一种物质是2小组同学提出可以用二氧化锰固体区分剩余两种无色液体分别取少量液体于试管中加入二氧化锰其中一只试管内观察到则该试管盛装的液体是过氧化氢溶液.
氨气NH3在一定条件下可以和氧气发生化学反应如下图所示分析并回答有关问题. 1甲物质中氮氢元素的质量比为 2写出丙物质的化学式 3甲乙丙丁四种物质中属于氧化物的有 4参加化学反应的甲乙的分子个数比为
不是你而是他为这件事情负责.not…but
实验操作中应该严谨规范下列说法正确的是
YesI'llbereadyatnineinthemorning.Goodbyedearandthanksagain.IthadnotbeenaneasytelephonecallforMrsRobsontomake.HerdaughterhadbeenverykindofcourseandhadimmediatelyagreedtopickherupanddrivehertothestationbutMrsRobsonhatedtosaythatsheneededhelp.Sinceherhusbanddiedtenyearsagoshehadbeenproudofherselfonherindependence.Shehadcontinuedtoliveintheirlittlehousealone. ThateveninghowevershewasstandingatherlivingroomwindowstaringoutattheSOLDnoticeinthesmallfrontgarden.Herfeelingsweremixed.Ofcourseshewassadatthethoughtofleavingthehouseasitwasfullofsomanymemories.Butatthesametimeshewaslookingforwardtospendingherlastyearsneartheseabackinthelittleseasidetownwhereshehadbeenbornandgrewup.Withthemoneyfromthesaleofthehouseshehadboughtalittleflatthere.Sheturnedfromthelivingroomwindowandlookedroundattheroom.Therewasasmallfishtankwithtwogoldfishinit.WhenaskedwhyherhusbandusedtosayIt'snicetohavesomethingaliveintheroom.Sincehehadpassedawayshehadalwayskeptsomegoldfishandalwayshadsomethingaliveintheroom. ThenextmorningashertrainwaspullingoutofthestationMrsRobsoncalledtoherdaughterKateyouwon'tforgettocollectthegoldfishwillyou?Thechildrenwilllovethem.It's… IknowKateinterruptedgently.It'snicetohavesomethingaliveintheroom. 1AccordingtothefirstparagraphweknowthatMrsRobson. A.wastiredoflivingalone B.dislikedturningtopeopleforhelp C.wasnotlikedbyherdaughter D.wantedtolivewithoutherhusband 2HowwasMrsRobsonfeelingonherlastnightinthehouse? A.Sadandhopeful. B.Happybutworried. C.Proudandsad. D.Happybutnervous. 3MrsRobsonwasgoingto. A.beinhospital B.livewithherdaughter C.travelabroadalone D.liveinherhometown 4WhatcanwelearnaboutMrsRobsonfromthepassage? A.Shedislikedkeepingpetsathome. B.Shemissedherhusbandverymuch. C.Shehadthesamehobbywithherhusband. D.Shewasworriedaboutherdaughter'sbadmemory.
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