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小敏同学业利用矿泉水瓶做了以下几个实验．1实验一如图甲将一瓶装有大部分水的矿泉水瓶先后正放倒入在海绵上并观察海绵形变的情况这是 Template






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sketch 3388 Fight Club by Alvaro Velasquez
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tomski小敏同学业利用矿泉水瓶做了以下几个实验．1实验一如图甲将一瓶装有大部分水的矿泉水瓶先后正放倒入在海绵上并观察海绵形变的情况这是 coloring
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小刚用矿泉水瓶做实验1如图甲他用水平力推动底部时瓶子沿桌面平稳地移动他用相同的水平力推瓶盖时瓶子翻了验证的是力的作用效果与力的 sketch template
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小敏同学业利用矿泉水瓶做了以下几个实验．1实验一如图甲将一瓶装有大部分水的矿泉水瓶先后正放倒入在海绵上并观察海绵形变的情况这是 sketch template
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某同学用空料饮料瓶做简易净水器设计图如右．1请你帮他继续设计小卵石活性炭石英砂三种材料的位置在右图上写出对应所需的材料 sketch template
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1某同学用空料饮料瓶做简易净水器设计图如图．请你帮他继续设计小卵石活性炭石英沙三种材料的位置在答题卷上写出对应所需的材料 sketch template
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如图所示小明同学粗略测定二氧化碳常温下在水中 溶解体积比的实验他的具体实验步骤是用软质饮料瓶收集满一瓶二氧化碳气体．瓶中倒入约三 sketch template
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如图是小明同学用矿泉水瓶水及海绵探究“压力的作用效果与什么因素有关 的实验过程通过观察下图他现三次的作用效果一次比一次明显于是他得出 sketch template
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题目果果是个爱钻研的学生他利用矿泉水瓶做了一系列有关植物生理作用的实验如图所示．请仔细阅读回答问题1将A装置光照一段时间后现 sketch template
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题目学习化学离不开实验．1小明同学在家里利用替代品进行相关实验．如配制较多溶液时用玻璃杯代替如图1所示的仪器中的 搅拌时用筷子代替 sketch template
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小明用矿泉水瓶和小玻璃瓶制作了一个“浮沉子 ．他将装有适量水的小玻璃瓶瓶口朝下使其漂浮在矿泉水瓶内的水面上矿泉水瓶内留有量空气拧紧瓶盖 sketch template
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17．小阳同学在课堂上学习了有关酵母菌酵知识对“酵现象 产生了兴趣心想酵母菌酵受温度影响吗回家后做了如图所示改进实验将两个 sketch template
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用料笔杆在头上擦再用此笔杆去靠小纸现小纸会飞料笔杆其原因是 其中的一些小纸接触笔杆后会弹开其原因是 ．——青夏 sketch template
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题目以下是测定菜油密度的实验步骤1用天平测出空矿泉水瓶的质量m2在矿泉水瓶中装满水用天平测出总质量m13在矿泉水瓶中装 sketch template
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在研究碱的性质时，充满CO2的矿泉水瓶里加入量Ca（OH）2溶液，拧紧瓶盖并振荡，瓶变瘪，但溶液中并未出现浊，那么Ca（OH）2溶液是否 sketch template
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在探究“液体对容器底部的压强 实验中小明用两个相同的矿泉水瓶做了对比实验其中乙瓶的底部剪去蒙上橡皮膜实验现象如图所示下列说法中正确的 sketch template
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题目如图表示食物经过消化道时糖类蛋白质脂肪被消化的程度字母表示消化道顺序的各个器官请回答1曲线X表示 的消化曲线Y表示 sketch template
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如图9所示瓶中装有一定量的啤酒瓶竖直上放置时酒对瓶底压强为压力为若将它竖直倒着放置时酒对瓶盖的压强为压力为则 填 sketch template
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阳阳同学做了一个趣实验他把气球中的镁加入到盛有稀盐酸的锥形瓶中整个实验过程如图所示．他关于本实验的下列说法中不正确的是A本实验能说明 sketch template
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在学习液体压强时小明用三个矿泉水瓶和其他一些器材对液体压强的特点进行了研究．1如图甲所示小明在第一个矿泉水瓶上的AB两处开了两个大小 sketch template
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趣小组的同学在装有氢氧化钠溶液的试剂瓶瓶口现量的白色粉末甲同学认为该白色粉末的成分是氢氧化钠乙同学认为该白色粉末的成分全部是氢氧化钠 sketch template
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姗姗用矿泉水瓶做如下实验1取一矿泉水瓶用力捏瓶子变瘪说明力可以改变物体的 ．2将矿泉水瓶装满水用硬纸片盖住瓶口按住纸片将 sketch template
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如图用水平力轻轻推动矿泉水瓶底部时瓶子沿桌面平稳地移动用等大的水平力轻推瓶盖瓶子翻了．这说明力的作用效果与 的有关选填“大小 sketch template
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如图所示往装满CO2的软矿泉水瓶加水迅速拧紧瓶盖震荡后CO2溶于水中生成碳酸矿泉水瓶变瘪瓶变瘪表明瓶内气体压强 瓶外气体压强选填 sketch template
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请你根据如图回答下列有关问题 1标号a的仪器的名称是 ． 2实验室用加热高锰酸钾制取氧气应选用的气体生装置是 ．其反应的文字 sketch template
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如图是教材中“二氧化碳的溶解性实验” 一个收集满二氧化碳气体的质地较软的料瓶中加入约 1 3 体积的水，立即旋紧瓶盖，观察料瓶的变化 sketch template
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实验室制取氧气并进行相关性质实验。 sketch template
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化学课上老师在一瓶充满CO2软料瓶中加入适量NaOH溶液振荡现软料瓶变瘪针对这一有趣的现象同学们表自己的见解请参与其中并 sketch template
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20．小敏同学在探究影响浮力大小的因素时做了如图13所示的实验．请你根据小敏的实验探究回答下列问题 比较图一和图 说明浸在液体中的物体 sketch template
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如图所示矿泉水瓶的总质量为500 G用手握住竖直的矿泉水瓶不动瓶受到的擦力方 大小为 N如果增大握力则瓶子受到的擦力 选填 sketch template
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一次实验课上细心的小红小敏同学同时现盛有NaOH溶液的试剂瓶塞外有量白色粉末．提出问题白色粉末是什么1猜想与假设 sketch template
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学习了MnO2对过氧化氢有催化作用的知识后小敏同学想CuO能否起到类似MnO2的催化剂作用于是进行了如下探究．猜想Ⅰ．CuO不是 sketch template
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小敏同学在探究影响浮力大小的因素时做了如图所示的实验．请你根据小敏的实验探究回答下列问题．1在C与E两图中保持了排开液体的体积不变 sketch template
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小敏同学想探究“馒头在口腔中的变化 它进行了三种处理Ⅰ将馒头碎与唾液放入号试管中充分搅拌Ⅱ将馒头碎与清水放入号试管中充分搅拌 sketch template
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某课外活动小组的同学为测定一瓶BaCl2溶液溶质的质量分数做了以下实验请回答有关问题1从试剂瓶中取出10gBaCl2溶液于一个洁净的 sketch template
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小敏同学在探究“影响浮力大小的因素 时做了如图所示的实验请你根据小敏的实验探究回答下列问题．1比较图 和图 说明浸在液体中的物体会 sketch template
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题目在“观察水的沸腾 的实验中 小组记录的实验数据如下表所示1某实验小组观察到水沸腾前和沸腾时水中气泡的上升情况不同如上图中a sketch template