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如图所示广口瓶中盛有气体x胶头滴管中盛有液体y若挤压胶头滴管使液体滴入瓶中振荡一段时间后可见小气球a膨胀鼓起下列各组物质不会出现 Template






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sketch 5313 Katy Perry by Monalisa Theresia
sketch 787
sketch 251
sketch 1034 what ever you want it to be
sketch 5179 Audrey Hepburn by 陳一夫
sketch 5316
sketch 5079 SketchToy Pencil by Sarah Prieto
sketch 2027

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sketch 1131 nərgiz
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sketch 5086 Lion by Z Ionut Ady
sketch 3447 Hidan (Akatsuki) by ßeyza Karaca
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sketch 5054 Angelina Jolie by Hailey So Pretty





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tomski如图所示广口瓶中盛有气体x胶头滴管中盛有液体y若挤压胶头滴管使液体滴入瓶中振荡一段时间后可见小气球a膨胀鼓起下列各组物质不会出现 coloring
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如图所示广口瓶中盛有气体X胶头滴管中盛有液体Y若挤压胶头滴管使液体滴入瓶中振荡一段时间后可见小气球a膨胀鼓起下列各组物质不会出现 sketch template
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利用如图所示装置设计一个简单的一次性完成的实验验证乙酸碳酸和苯酚的酸性强弱．1用导管口的字母表示所选用装置的连接顺序 ．2装置 sketch template
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如图所示的广口瓶内放一个音乐芯片在瓶口塞上插有玻璃管的软木塞．1此时你能听到音乐声吗答能．2用抽气机将瓶内的空气抽出在抽气机 sketch template
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如图所示广口瓶中盛有量饱和澄清石灰水小试管和U形管中均有适量水现小试管中注入适量浓硫酸． 请回答 1可观察到饱和澄清石灰水 sketch template
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如右图是某广口瓶的标签已经部分被污损和腐蚀小明想探究其成分他取一支洁净的试管加入量广口瓶中的固体滴入量盐酸有无色无气泡产生 sketch template
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如右图所示广口瓶中加入一定量的固体将胶头滴管中的液体滴加到广口瓶中能使b端被面明显上升的固体和液体的组和可能是 A．碳酸氢钠和稀盐酸 sketch template
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19．如图所示将氯气依次通过盛有干燥有色布条的广口瓶和盛有潮湿有色布条的广口瓶可观察到的现象是 2为防止氯气尾气污染空气根据氯水 sketch template
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某研究性学习小组用右图所示装置进行如下实验不考气体与水或盐的反应1先广口瓶中加入一定量盐酸溶液关闭活塞震荡观察到固体全部溶解 sketch template
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如图广口瓶中盛有气体X胶头滴管中盛有液体Y．若挤压胶头滴管使液体滴入瓶中振荡一段时间后可见小气球a膨胀鼓起．下列各组物质不会出现上述 sketch template
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如图所示广口瓶中盛有量饱和澄清石灰水小试管和U形管中均有适量水现小试管中注入适量浓硫酸．请回答1可观察到饱和澄清石灰水变浊 sketch template
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42．如图所示挤压胶头滴管中的液体使之与瓶中固体接触可使小气球鼓起来请写出符合下列要求的化学方程式 1分解反应 2化合 sketch template
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如图所示某同学设计了一组实验来研究CO2的性质．图中三个集气瓶都盛有用紫色石蕊染成的干燥小花．用手挤压三个集气瓶上的胶头滴管使其中液体滴在 sketch template
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如图所示将手机放在玻璃广口瓶中并用抽气机将其中的气体不断的外抽．打电话叫罩中的手机这时手机不能不能收到叫信号由此实验现象可以得出 sketch template
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11．某学生利用一支底部有破洞的试管和一个广口瓶组装成制取二氧化碳的生装置在铜上应盛放 广口瓶中应盛有 ．若将铜换成铁那么产生的 sketch template
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如下图所示的甲乙两个装置中胶头滴管中吸入某种液体平底烧瓶中放入另一种物质挤压胶头滴管加入液体一段时间后甲装置中的气球明显胀大乙装置 sketch template
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如图所示广口瓶中盛有气体X胶头滴管中盛有液体Y若挤压胶头滴管使液体滴入广口瓶中振荡一段时间后可见小气球a膨胀鼓起下表中的各组物质不 sketch template
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1如图所示将氯气依次通过盛有干燥有色布条的广口瓶和盛有湿润有色布条的广口瓶可观察到的现象是干燥的有色布条无明显现象潮湿的有色布条褪色 sketch template
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如图所示气球与大气相通胶头滴管中有某种溶液挤压胶头后气球变大则胶头滴管与的广口瓶物质中分别为 A．H2O与 CaOB．NaOH与 sketch template
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如图挤压胶头滴管中的液体使之与锥形瓶的固体接触．1若使小气球鼓起来写出符合下列要求的化学反应方程式分解反应 化合反应 ．2若 sketch template
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如图所示胶头滴管中是氢氧化钠溶液锥形瓶中是二氧化碳气体．1如果把氢氧化钠溶液滴入锥形瓶中现象是 2证明该实验中氢氧化钠溶液与 sketch template
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题目下图是实验室制取气体的常用装置1写出用 A 装置制取氧气的化学方程式 2B 装置可以控制反应的生和停止请简述使 B sketch template
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老师用如图所示装置为同学们做如下实验A装置集气瓶中装有体积比约为11的氮气和气体a的混合气体注射器中装有足量的无色溶液bB装置中盛有 sketch template
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如图是实验室制取气体的常用装置．1A中的试管口为什么应略下倾斜2写出选用B制取氧气符号表达式．3若采用C收集到氧气如何证明 sketch template
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如图所示瓶内打气当瓶塞跳起时会看到瓶内出现“白气 下面对这个现象的解释中正确的解释顺序是DACBDACB．A．瓶内空气内能减小 B sketch template
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空气 sketch template
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如图所示将密闭的相互连通的两个广口瓶放在天平托盘上使之平衡然后放置一会儿．下列有关叙述正确的是 A．指针不偏蔗糖溶液浓度不变B sketch template
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某化学兴趣小组用如图所示的装置作有关二氧化碳气体的实验1甲同学将收集满二氧化碳气体的试管倒插入紫色试蕊试液中并轻轻动试管．描述产生的 sketch template
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如图所示用胶头滴管装有固体的广口瓶中滴加液体使气球变大则使用的固体和液 体的下列组合不可能是 选项固体液体A镁稀盐酸B生石灰水C sketch template
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如图是测定空气里氧气含量的实验装置实验时点燃燃烧匙内的红磷后立即伸入瓶中塞紧塞子待火焰熄灭后现红磷还有剩余冷却打开弹簧夹烧杯中 sketch template
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如图所示锥形瓶内有一支试管试管内盛有足量的稀盐酸锥形瓶底部盛有足量碳酸钙气球紧紧在玻璃导管上将此装置放在托盘天平左盘上调节天平 sketch template
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用如图所示的装置进行实验可以使气球 膨胀或缩小导气管伸入瓶内部分与一个小气球紧密连接玻璃导管C另一端与大气相通控制漏斗上的活塞开关可以 sketch template
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如右图所示广口瓶中加入一定量的固体将胶头滴管中的液体滴加到广口瓶中能使b端被面明显上升的固体和液体的组和可能是A．碳酸氢钠和稀盐酸B sketch template
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如图所示甲瓶中的水不从小孔AB流出说明有 存在．乙瓶中的水从小孔AB流出说明液体对容器的侧壁有压强水的落地点不同说明液体的压强随 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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有一均匀的颗粒状锌铜合Wg．某学生利用如图所示的装置通过测定合与酸反应产生氢气的体积来测定合锌铜的质量分数．试回答下列问题在空格 sketch template