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下面是某兴趣小组同学进行实验探究时的实验装置图请认真观察结合所学知识作答1 甲乙一组实验探究的问题是 其中图中的 起对照作用 2 Template






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sketch 1076
sketch 1450
sketch 135 TYGER Style
sketch 4939 Zelda by Jeanie Wagenknecht
sketch 2559 sun
sketch 4766 The Little Mermaid by Zizou Aiman
sketch 4774 Banksy&#;s Wall and Piece by Ameli Cedeño Barcia
sketch 5100 Shadow by An Nguyen

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sketch 282
sketch 3088 Billy from Saw by Naulian Ciko
sketch 3488 cats
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sketch 124 saurez





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tomski下面是某兴趣小组同学进行实验探究时的实验装置图请认真观察结合所学知识作答1 甲乙一组实验探究的问题是 其中图中的 coloring
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某兴趣小组同学按照下图实验装置进行实验请回答相关问题1你认为设计该实验是为了测定空气中氧气的含量2实验过程中下列操作不妥的是 sketch template
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某学习小组的同学对实验室制取二氧化碳及二氧化碳的性质进行如下两个方面的探究。Ⅰ二氧化碳的制取第一小组用如图所示的装置制取二氧化碳并测定生成 sketch template
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某兴趣小组的同学对水的组成进行了实验探究。【提出问题水是由什么组成的【查阅资料通过电解水和点燃氢气证明燃烧产物的方法均可证明水的组成 sketch template
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27．学校化学兴趣小组的同学对一瓶溶液进行分析初步确定它是含有同种阴离子的MN的混合溶液继续分析的步骤如下 请根据上述实验过程及现象 sketch template
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百度教育 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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题目取氯酸钾和二氧化锰的混合物30g加热一段时间后冷却冷却后称得剩余固体质量为204g将剩余固体加入一定量的水中充分搅拌后过滤 sketch template
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某学校化学兴趣小组同学在学习了制取氧气这一节内容后现在实验室里用5%H2O2溶液加热制O2用带火星的木条检验木条很难复燃．同学们经过 sketch template
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33．某生物兴趣小组的同学进行探究萘乙酸NAA促进插条生根最适浓度的预实验结果如图所示在预实验的基础上他们又进一步设计如下实验探究 sketch template
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某实验小组同学为了探究铜与浓硫酸的反应进行如下实验．实验1铜与浓硫酸反应实验装置如图所示．实验步骤先连接好装置检验气密性加入试剂 sketch template
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某化学兴趣小组为探究SO2的性质按下图所示装置进行实验已知Na2SO3 H2SO4浓Na2SO4 SO2 H2O请回答下列问题 sketch template
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水是生之源某化学兴趣小组对水进行了探究．1图为进行电解水实验的装置图据此回答C试管中收集到的气体是氧气图中B端为电源的负极该 sketch template
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1某实验小组的同学在“绿叶在光下制造有机物 的实验中用银边天竺作为实验材料完成了图1所示的实验步骤请你根据以下实验步骤回答下列 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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1某学兴趣小组的同学设计了如下三个实验装置来验证质量守恒定律其中只有A装置能用来验证质量守恒定律BC装置则不能否定BC装置的 sketch template
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某兴趣小组对物质的性质和成分进行相关探究．兴趣小组同学用氧化铜与足量的碳粉利用图甲所示装置进行实验对生成气体的成分进行探究．提出问题生成 sketch template
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某班同学按下图所示的实验探究质量守恒定律1同学们先按图1的方式实验将盐酸加到碳酸钠粉末中生反应的化学方程式为 该实验中大家进行了 sketch template
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题目某化学兴趣小组在实验室用除去表面氧化物的铁钉与浓硫酸共热制取SO2 并完成相关性质探究1有同学认为制得的SO2 中可能混有杂质 sketch template
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如图某兴趣小组同学做了以下实验．请回答有关 问题．1该实验的目的是探究分子的运动2A烧杯中的现象是酚酞试液由无色变成红色3为了 sketch template
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下面是某兴趣小组同学进行实验探究时的实验装置图请认真观察结合所学知识作答1 甲乙一组实验探究的问题是 其中图中的 起对照作用 2 sketch template
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在研究“铁生锈的条件 的实验中某兴趣小组对实验进行了创新设计请把实验补充完整．实验目的铁生锈条件的探究．实验内容取3段光亮无锈的细 sketch template
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某化学兴趣小组在做完石灰石和稀盐酸制取二氧化碳的实验后对反应后剩余溶液的溶质成分产生了兴趣他们进行了以下实验探究．提出猜想实验室制取 sketch template
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咱们学校化学兴趣小组的同学对实验室制备氧气的若干问题进行如图探究一为探究影响双氧水分解速度的某种因素A小组记录了如下实验数据双氧水 sketch template
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某兴趣小组在实验室中模拟高炉炼铁化学原理的实验对固体产物成分等进行探究用一氧化碳还原氧化铁粉末实验装置如图1实验中观察到玻璃管中的 sketch template
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下面是某兴趣小组同学进行实验探究时的实验装置图请认真观察结合所学知识作答1 甲乙一组实验探究的问题是 其中图中的 起对照作用 2 sketch template
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某化学兴趣小组在做完石灰石和稀盐酸制取二氧化碳的实验后对反应后剩余溶液的溶质成分产生了兴趣他们进行了以下实验探究．提出猜想实验室制取 sketch template
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某兴趣小组在实验室中模拟炼铁化学原理的实验对固体产物成分等进行探究 设计实验用一氧化碳还原纯净的氧化铁粉末实验装置如下图 进行 sketch template
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题目某兴趣小组对物质的性质进行相关探究 提出问题氯化氢HCl气体显酸性吗进行实验该兴趣小组的同学根据二氧化碳与水反应的实验 sketch template
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某化学活动小组在一次实验中进行了如图所示实验此时观察到的实验现象是1U形玻璃管左右两端均产生白色沉淀．实验后小组同学充分振荡U形玻璃 sketch template
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下面是某兴趣小组同学进行实验探究时的实验装置图请认真观察结合所学知识作答1 甲乙一组实验探究的问题是 其中图中的 起对照作用 2 sketch template
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题目某化学兴趣小组欲探究含硫物质的性质用下面的装置和药品探究亚硫酸与次氯酸的酸性强弱1装置连接顺序为 用字母表示F中反应的 sketch template
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有两个兴趣小组运用下列装置进行了如下实验请分析回答1甲组探究的问题是种子萌时进行的吸类型想得到实验结论还必须同时设置对照实验 sketch template
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某兴趣小组同学设计探究光合作用需要某种原料的实验实验前将天竺放在暗处一昼夜按下图示装置安放好光照2 3小时分别取下叶片A和B浸入 sketch template
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某化学兴趣小组探究铜与浓硫酸的反应探究过程如下．实验一铜与浓硫酸反应按如图装置进行实验．1仪器X的名称是分液漏斗装置B的作用是防止倒 sketch template
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某化学兴趣小组设计了如图所示的装置对纯碱Na2CO3和小苏打NaHCO3两种固体进行实验探究．1在实验过程中观察到丙仪器中的 sketch template