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下图是某同学设计的一组实验装置请分析回答问题1此组实验装置能构成对照实验的是 2将快要熄灭的细木条插进甲装置试管收集的气体中 Template






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sketch 90 JF Style!
sketch 3659 Portrait by Mari Falcsik
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sketch 5069 Mad Hatter by Ahmed Mostafa
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sketch 2486 Face by sketchmaster
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tomski下图是某同学设计的一组实验装置请分析回答问题1此组实验装置能构成对照实验的是 2将快要熄灭的细木条插进甲装置试管收集的气体中 coloring
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下图是某同学设计的一组实验装置请分析回答问题1此组实验装置能构成对照实验的是 ．2将快要熄灭的细木条插进甲装置试管收集的气体中 sketch template
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下图是某同学设计的一组实验装置请分析回答问题1此组实验装置能构成对照实验的是 ．2将快要熄灭的细木条插进甲装置试管收集的气体中 sketch template
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某校学生课外活动小组的同学设计下图所示实验装置用来验证一氧化碳具有还原性回答下列问题 1装置B中最适宜的试剂是 2装置C的 sketch template
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19．下图所示是课外活动小组同学设计的几种尾气吸收装置装置中的液体为水固体为碱石灰从实验安全和保护环境的角度考当用于吸收HCl气体 sketch template
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下图是小明同学设计的二个实验室制取氢气的装置 1与甲装置比较乙装置的优点是 2用上述装置收集到的氢气不纯可能的原——青夏教育 sketch template
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图一是某同学设计的一组实验在两个大小相似的萝卜中各挖一个大小相等的洞甲乙萝卜的洞中分别注入等量的清水和浓盐水各用一个装有玻璃管的橡皮 sketch template
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37．下图是某同学设计的实验装置图用文字回答下列问题 1在给CuO加热前要先通入一氧化碳其目的是 ——青夏教育精英家教—— sketch template
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下图是某同学设计的实验制取氧气的装置请简要指出装置中的错误1导气管伸入试管过长 2使用了下排空气法． 题目和参考答案——青夏 sketch template
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下图是某同学设计的实验制取氧气的装置请简要指出装置中的错误1导气管伸入试管过长 2使用了下排空气法． 题目和参考答案——青夏 sketch template
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题目图一是某同学设计的一组实验在两个大小相似的萝卜中各挖一个大小相等的洞甲乙萝卜的洞中分别注入等量的清水和浓盐水各用一个装有玻璃 sketch template
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题目图一是某同学设计的一组实验在两个大小相似的萝卜中各挖一个大小相等的洞甲乙萝卜的洞中分别注入等量的清水和浓盐水各用一个装有玻璃 sketch template
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题目下图ABCD所示为某同学设计的检验唾液淀粉酶作用的系列试验装置请仔细分析后回答 1该实验的变量是 2图B的2号试管 sketch template
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下图是某同学设计的一组实验装置请分析回答问题1此组实验装置能构成对照实验的是 2将快要熄灭的细木条插进甲装置试管收集的气体中 sketch template
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某化学兴趣小组同学设计了多组实验装置测定空气中氧气的含量．1甲同学设计图1装置进行实验．实验过程中观察到烧杯中的水被倒吸入集气瓶中其原因 sketch template
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图一是某同学设计的一组实验在两个大小相似的萝卜中各挖一个大小相等的洞甲乙萝卜的洞中分别注入等量的清水和浓盐水各用一个装有玻璃管的橡皮 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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下图为某同学设计的探究绿色植物蒸腾作用的两套实验装置请分析回答1如果让你来验证植物的蒸腾作用你选用一套装置 不选另一套的理由是 sketch template
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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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下面左图是一棵生长在水渠边的果右图是某同学设计的“探究根是否具有水生长的特性 的实验装置示意图．请利用这一实验装置完成探究．1根据左 sketch template
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下图为某同学探究铁铜银三种属活动性顺序的一组实验 1上述实验中有气泡产生的试管中生反应的化学方程式 2国古代“湿法冶铜 sketch template
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某同学设计了如图实验装置来验证叶的蒸腾作用．取三支试管各注入相同体积的清水分别插入一棵大小相似的枝条甲乙装置枝条保留全部叶丙装置枝条 sketch template
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实验某同学设计了下面实验来验证植物的蒸腾作用．取三支试管各注入相同体积的清水分别插入大小相似的枝条甲乙装置枝条保留全部叶片丙装置 sketch template
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如图是某同学设计的趣实验装置其气密性良好．1若B中尖嘴导管处有“喷泉 产生请推测A中的物质可能是什么＜答出两条即可＞2若要使B sketch template
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为了探究几种气态氧化物的性质某同学设计了如图所示的一组实验用三个集气瓶收集满SO2NO2然后分别倒置于盛有水的水槽中分别缓慢通入适量 sketch template
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如图是某同学设计的一组实验在两个大小几乎相同的萝卜中各挖一个大小相等的洞甲乙萝卜的洞中分别注入等量的清水和浓盐水各用一个装有玻璃管的 sketch template
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某同学设计了一组实验装置如下图所示用于比较过氧化氢酶和Fe3 的催化效率据此回答下列问题．1本实验的主要目的是探索酶的高效性过氧化氢 sketch template
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某同学设计了测定空气中氧气含量的实验实验装置如图该同学的实验步骤如下请回答实验中有关问题将图中的集气瓶分为5等份并作好标记在带 sketch template
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下图是同学们熟悉的实验室制取气体的生装置和收集装置 请回忆氧气二氧化碳的实验室制法并在预习氢气实验室制法基础上完成下表 氧气 sketch template
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某同学用下图所示的装置做测定空气的中氧含量的含量的实验1红磷在集气瓶中燃烧可观察到的现象是 2红磷熄灭并冷却后打开弹簧夹后观察 sketch template
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某同学设计了测定空气中氧气含量的实验实验装置如图该同学的实验步骤如下请回答实验中有关问题将图中的集气瓶分为5等份并作好标记在带 sketch template
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某同学设计用加热高锰酸钾制取氧气的实验仪器装置如图所示1写出图中数字所指的仪器名称 ．2请指出该装置中的四处错误 sketch template
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某生物兴趣小组的同学为研究植物的生活动设计了以下实验装置请据图分析回答提示氢氧化钠溶液可以吸收二氧化碳 1首先将甲乙两个 sketch template
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如图所示是某同学为研究“并联电路电流的特点 所设计的实验电路实验后数据记录如表所示．研究过程中该同学采用了两种方案进行实验即a改变 sketch template
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某同学设计如图所示装置分别进行探究实验请回答下列问题实验药品制取气体量气管中的液体ⅠCu稀HNO3H2OⅡNaOH固体浓氨水NH3Ⅲ镁 sketch template
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某同学设计实验探究工业制乙烯的原理和乙烯的主要化学性质实验装置如图所示．请回答下列问题1工业制乙烯的实验原理是烷烃在催化剂和加热条件下 sketch template