小明同学利用如图甲所示实验装置观察水的沸腾现象。（1）在安装器材确定铁圈位置时（选填“需要”或“不需要”）点燃酒精灯；在安装器材时出现如图甲 Sketch Coloring Page

小明同学利用如图甲所示实验装置观察水的沸腾现象。（1）在安装器材确定铁圈位置时（选填“需要”或“不需要”）点燃酒精灯；在安装器材时出现如图甲 Template

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tomski小明同学利用如图甲所示实验装置观察水的沸腾现象。（1）在安装器材确定铁圈位置时（选填“需要”或“不需要”）点燃酒精灯；在安装器材时出现如图甲 coloring

小明同学利用如图甲所示实验装置观察水的沸腾现象。（1）在安装器材确定铁圈位置时 （选填“需要”或“不需要”）点燃酒精灯；在安装器材时出现如图甲 sketch template

题目1为了比较水和食用油的吸热能力小明用两个相同的装置做了如图甲所示的实验．�在两个相同的烧杯中应加入初温相同相同的水和煤油ρ sketch template

题目小明想通过实验比较不同燃料的热值．他利用如图所示完全相同的甲乙两套实验装置用质量相等的酒精和碎纸片分别同时给质量和初温都相同的水 sketch template

小明利用如图甲所示的实验装置探究“水的沸腾”实验。（1）组装器材时，应先固定图甲中的 （选填“A”或“B”），组装好仪器后如图甲所示，图甲中有 sketch template

题目小明利用如图甲所示的实验装置做“观察水的沸腾 的实验1组装器材时应先固定图甲中的．除了图示器材外实验时还需要用到的测量仪器是 sketch template

小明同学利用如图甲所示实验装置观察水的沸腾现象。（1）在安装器材确定铁圈位置时 （选填“需要”或“不需要”）点燃酒精灯；在安装器材时出现如图甲 sketch template

小明同学在利用如图所示电路进行电学实验时闭合开关�现灯L1亮灯L2不亮电流表和电压表均有示数则故障原因是 A．灯L1断路 B．灯L1 sketch template

在“观察水的沸腾”实验中： sketch template

在“观察水的沸腾 实验中1如图所示是小明同学用温度计测小烧杯中水的初温时的操作图．A是操作过程B是读数过程C是读取的温度．�A图中 sketch template

小明利用如图甲所示的实验装置探究“水的沸腾”实验。（1）组装器材时，应先固定图甲中的 （选填“A”或“B”），组装好仪器后如图甲所示，图甲中有 sketch template

某组同学做“观察水的沸腾 实验用酒精灯给盛了水的烧杯加热注意观察温度计的示数实验装置如图所示．当水温升到90℃时每隔1min记录1次 sketch template

题目学习化学离不开实验实验需要仪器和实验装置以下一共3个实验图请回答1小明同学在家里利用替代品进行相关实验如配制较多溶液时 sketch template

如图甲所示为小明同学“探究水沸腾时温度变化特点”的实验，请回答下列问题：�刚开始时，烧杯内温度计的示数如图乙所示，此时温度计的示数为 sketch template

图中所示是小明同学做“观察水沸腾 的实验装置 1本实验的目的是观察沸腾现象探究水沸腾时 的变化规律 2图中所示的温度是 ℃ sketch template

小明同学制作了如图所示的简易分解水装置对电解水实验进行进行探究进行家庭小实验．实验步骤1先检查装置气密性2然后按如图实验装置 sketch template

甲乙两种物质的质量和体积关系如图所示由图象可知AA．ρ甲＞ρ乙B．ρ甲＜ρ乙C．若V甲=V乙则m甲＜m乙D．若m甲=m乙则V甲＞V乙 sketch template

1在某地做探究水沸腾实验装置如图1所示加热一段时间烧杯内的水翻腾有大量气泡上升变大到水面破裂．这是汽化现象此时图中温度计的示 sketch template

在“观察水的沸腾 实验中1如图所示是小明同学用温度计测小烧杯中水的初温时的操作图A是操作过程B是读数过程C是读取的温度�A图中 sketch template

小明和小红想利用如图所示的实验装置探究电流产生的热量与哪些因素有关的实验中两瓶煤油中都浸泡着一段�属丝烧瓶甲中的�属丝是镍铬合�丝电阻 sketch template

题目小花同学用如图甲所示的装置对冰加热1根据实验记录他绘制了冰熔化时温度随时间变化的图象如图乙所示．由图象可知冰是 填“晶体 sketch template

在探究“水的沸腾 的实验中甲乙两组同学分别使用AB两套装置来完成实验．1安装实验器材时应按照自下而上选填“自上而下 或“自下而上 sketch template

陈明同学设计如图所示的装置研究水的汽化和液化现象．酒精灯通过石棉�对烧瓶里的水加热产生的水蒸气通过玻璃管通入烧杯中温度计甲用于测量沸水的 sketch template

小明用图甲所示的装置做“观察水的沸腾 实验．1如图乙所示温度的正确读数是95℃．2当水沸腾时水中有一个气泡从A位置体积VA上升 sketch template

小宇同学用如图甲所示的装置对冰加热．根据实验记录画出的温度随时间变化的图线如图所示．请你回答1图甲中温度计的示数为 ℃．2图乙中段 sketch template

小李在“探究物质熔化规律”实验中，所用装置如图甲所示。�在安装器材时应按照选填（“从上到下”或“从下到上”）的顺序安装器材；�从图乙可知物质在 sketch template

小华设计了如图所示的甲、乙两种装置来探究“冰熔化时温度变化规律”． 1实验室常用温度汁是利用液体的 性质制成的，小华某一时刻观察到温度计示 sketch template

8．某同学用如图6甲所示的实验装置做“用双缝干涉测光的波长 的实验他用带有游标尺的测量头测量相邻两条亮条纹间的距离转动测量头的手轮使分划 sketch template

题目小刚学习了“探究物质密度以后来到实验室测量糖水的密度1小刚将天平放在 台上将游码移到标尺左端的 处此时指针在分度盘上的 sketch template

如图是“探究水沸腾时温度规律特点 的实验装置用酒精灯给水加热至沸腾．加热至90℃时每隔05min记录一次温度小军记录数据见下表时间 sketch template

题目某兴趣小组利用透明橡皮膜注射器乳胶管止水夹等器材制成形状可改变的水透镜进行以下探究实验装置如图所示1在探究“凸透镜对光线 sketch template

在“观察水的沸腾 的实验中安装实验器材时应按照自下而上填“自上而下 或“自下而上 的顺序进行．某个实验小组观察到沸腾前和沸腾时水中气泡 sketch template

在“探究水的沸腾 实验中1如图1所示实验时看到水沸腾前后的现象沸腾时看到的现象是．2小华做此实验时�现加热很长时间水始终都 sketch template

题目如图所示两个完全相同的烧杯甲乙放在水平台上分别装有密度不同的盐水ab将两个完全相同的小球分别放入两烧杯中静止时两杯盐水液 sketch template

题目甲乙两只完全相同的杯子盛有浓度不同的盐水将同一只鸡蛋先后放入其中当鸡蛋静止时两液面相平鸡蛋所处的位置如图所示则 A 盐水对 sketch template

某物理兴趣小组的同学们在研究水的沸腾现象：（1）如图甲所示为该实验的装置，在安装时应先调整固定（选填“A”或“B”）的位置；（2）同学们观察 sketch template

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