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某化学兴趣小组的同学在老师的指导下利用如图所示装置进行实验探究活动．实验一装置a处玻璃管中盛放木炭探究可燃物燃烧的条件．i．打开k通入 Template






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tomski某化学兴趣小组的同学在老师的指导下利用如图所示装置进行实验探究活动．实验一装置a处玻璃管中盛放木炭探究可燃物燃烧的条件．i．打开k通入 coloring
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某中学化学兴趣小组在老师的指导下实验提供了如下器材和若干化学药品进行气体的制备和性质的探究邀请你一同参加．1写出图中标号a仪器的 sketch template
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某化学兴趣小组利用如图所示装置进行O2CO2的实验室制法和有关性质的研究．1写出图中编号仪器的名称锥形瓶．2甲同学使用A装置用 sketch template
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某化学兴趣小组的同学在老师的指导下设计了如下实验装置进行气体制取和性质的探究请回答有关问题 1请写出图中标有字母a的仪器名称 sketch template
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下面所示是某校化学兴趣小组的同学探究物质燃烧条件的实验过程 实验1在酒精灯上点燃木条和玻璃棒 实验2分别点燃两支小蜡烛将其中一支蜡烛 sketch template
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某化学兴趣小组的同学在老师的指导下利用如图所示装置进行实验探究活动．实验一装置A处玻璃管中盛放木炭探究可燃物燃烧的条件．I．打开K通入 sketch template
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某化学兴趣小组的同学对一份固体样品进行了探究．通过实验已确定该样品由氧化铁和铁粉混合而成．他们称取了136g固体样品用图1所示的装置进行 sketch template
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题目实验室开放日某化学兴趣小组的同学在老师的指导下设计了如图实验装置进行气体制取的探究请回答问题1写出图中标有字母的仪器名称 sketch template
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化学兴趣小组的同学进行了“测定空气中氧气的含量”的探究实验。（1）红磷燃烧的文字表达式为 。（2）实验探究步骤Ⅰ、将仪器按如图1装置连接好 sketch template
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某校化学兴趣小组的同学根据实验室提供的仪器和药品在老师的指导下从如图中选择装置进行了氧气的制备实验．1写出仪器a的名称 ．2甲同学 sketch template
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某化学兴趣小组对“空气中氧气含量的测定”展开探究． 实验回顾实验室常用红磷燃烧的方法测定空气中氧气的含量如图1、图2，红磷燃烧的符号 sketch template
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某学校两个化学兴趣小组的同学分别做常见酸和碱与指示剂反应的实验．使用的试剂如图所示．实验后废液分别集中到各组的一个废液缸中并对废液进行检测 sketch template
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化学兴趣小组的同学在实验室用如图所示装置制取几种常见的气体．1写出图中标有和的仪器名称 ．2小马用高锰酸钾制取气体他选择 sketch template
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题目在研究“酸碱中和反应 时某兴趣小组同学想证明稀盐酸与氢氧化钠溶液混合后是否生了化学反应进行了如下探究1在盛有氢氧化钠溶液的 sketch template
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某校兴趣小组同学在老师的指导下将课本“测定空气中氧气的含量 实验装置改进为新的实验装置．以下对改进后的实验装置评价不恰当的是 A．反应的 sketch template
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某化学兴趣小组的同学在老师的指导下利用如图所示装置进行实验探究活动．实验一装置A处玻璃管中盛放木炭探究可燃物燃烧的条件．I．打开K通入 sketch template
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1某化学兴趣小组的同学按照课本上的实验装置做“测定空气中氧气的体积分数 实验如下图A所示 如果实验非常成功能观察到的现象是 sketch template
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化学兴趣小组的同学在老师的指导下正确完成如下图所示两个实验已知所用实验装置气密性良好实验一中的样品取自于市售的某品牌“暖宝 成分为铁粉 sketch template
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3．某化学兴趣小组的同学在老师的指导下正确完成如图所示两个实验．查阅资料得知铜和氧气在加热的条件下反应生成色固体氧化铜．1实验一中 sketch template
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某化学兴趣小组利用如图装置进行实验：打开止水夹，将液体a滴入试管中与固体b接触，若试管中的导管口没有气泡产生，则液体a和固体b的组合可能是（ sketch template
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题目某校化学兴趣小组的同学根据实验室提供的仪器和药品在老师的指导下从下图中选择装置进行了氧气的制备实验1甲同学把过氧化氢溶液缓缓 sketch template
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题目某校化学兴趣小组的同学根据实验室提供的仪器和药品在老师的指导下从图中选择装置进行了氧气的制备实验． 1写出仪器a的名称2甲 sketch template
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某校化学兴趣小组的同学根据实验室提供的仪器和药品在老师的指导下从图中选择装置进行了氧气的制备实验．1写出仪器a的名称锥形瓶．2甲 sketch template
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某化学兴趣小组的同学在学习了纯碱Na2CO3的性质后联想到家中蒸制馒头时常用的物质小苏打NaHCO3于是探究了碳酸氢钠的化学性质 sketch template
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某兴趣小组的同学分几个小组利用如图装置进行该实验在实验中出现了以下一些现象请你帮助分析可能的原因和解决问题的方法． 1有一组加热时生 sketch template
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某化学兴趣小组的同学在老师的指导下利用如图所示装置进行实验探究活动．实验一装置A处玻璃管中盛放木炭探究可燃物燃烧的条件．I．打开K通入 sketch template
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某化学兴趣小组的同学利用如图所示实验装置进行实验．请按要求填空1利用B装置可制取的气体有 ．2ACE相连后的装置可用于制取Cl2 sketch template
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草酸H2C2O4加热能分解．化学兴趣小组的同学对草酸受热分解的产物作如下探究猜想与假设草酸分解得到的气体产物A．只有CO2 B sketch template
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某兴趣小组在老师的带领下对“二氧化碳的化学性质 进行探究．1同学用如图Ⅰ所示装置对二氧化碳的灭火实验进行研究他们观察到的现象是下面的蜡烛 sketch template
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某化学课外活动小组为同学们表演节目时他们在白纸上用干净的毛笔蘸取甲溶液画上“花 再用另一只毛笔蘸取乙溶液画上“叶 将白纸挂在墙上待晾干 sketch template
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某化学兴趣小组的同学在教师的指导下正确完成如下图所示的两实验已知所用实验装置气密性良好 实验一 实验二 关于该实验有如下说法红磷熄灭 sketch template
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某校化学兴趣小组的同学利用如图所示装置进行实验．实验目的用高锰酸钾制取一瓶氧气粗略测定加热2g高锰酸钾所收集到的氧气体积．仪器认识 sketch template
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某化学兴趣小组的同学利用如图所示实验装置进行实验请按要求填空1利用B装置可制取的气体有 2ACE相连后的装置可用于制取 sketch template
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实验室开放日某化学兴趣小组的同学在老师的指导下设计了如图实验装置进行气体制取和性质的探究请回答有关问题1请写出图中标有字母的仪器 sketch template
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实验室开放日某化学兴趣小组的同学在老师的指导下设计了如下实验装置进行气体制取和性质的探究请回答有关问题 1请写出图中标有字母的仪器 sketch template
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在今年的化学活动中某校兴趣小组同学在课题组老师的指导下利用白磷在空气中只需加热到40℃便能燃烧的特性将课本“测定空气中氧气的含量 实验 sketch template