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化学兴趣小组的同学为探究分子的性质做了如图所示实验．下列说法中正确的是（ ）
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化学兴趣小组的同学为探究分子的性质做了如图所示实验．下列说法中正确的是
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①③
②④
④⑤
②③
化学兴趣小组的同学为探究分子的性质做了如图所示实验．下列说法中正确的是
浓氨水呈酸性
两团棉花都变红
氨分子是由氨原子构成的
氨分子不断运动到醮有酚酞溶液的棉花上
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为了验证Fe3＋的性质某化学兴趣小组设计了如图所示的一组实验其中实验方案设计错误的是
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化学是一门实验科学关注物质变化过程探究物质变化的条件很有必要某化学兴趣小组做了如图所示的实验根据上述
在探究唾液淀粉酶的消化作用相关实验中兴趣小组的同学设计了如图所示的实验该实验欲探究的问题是
水对唾液淀粉酶活性的影响
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只有④
只有③
③和④均错
全部错误
为了验证Fe3+的性质某化学兴趣小组设计了如图所示的一组实验其中实验方案设计错误的是
只有④
只有③
③和④均错
全部错误
某化学兴趣小组为验证AgFeCu三种金属的活动性顺序设计了如图所示的实验操作其中可以达到实验目的的组
①②或②③或②④⑤
②④或①③或②④⑤
①③或②③或①④⑤
①②或②③或③④⑤
化学兴趣小组的同学为探究分子的性质做了如图所示实验．下列说法中正确的是
浓氨水呈酸性
两团棉花都变红
氨分子是由氨原子构成的
氨分子不断运动到醮有酚酞溶液的棉花上
化学是一门实验科学关注物质变化过程探究物质变化的条件很有必要某化学兴趣小组做了如下图所示的实验A.探
化学是一门实验科学关注物质变化过程探究物质变化的条件很有必要.某化学兴趣小组做了如图所示的实验.探究
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