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2022年初中化学常考实验三电解水
2022-09-29'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 分页标题 '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,...
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2022年初中化学常考实验四木炭还原氧化铜
2022-09-29'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})();...
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2022年初中化学必考实验一空气中氧气含量的测定
2022-09-29'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})();...
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2022年初中化学必考实验二高锰酸钾制氧气
2022-09-29'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 分页标题 '); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,...
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2022年初中化学实验常用仪器广口瓶/细口瓶
2022-09-05'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 广口瓶/细口瓶知识点 广口瓶(内壁是磨毛的)：常用于盛放固体试剂，也可用做洗气瓶...
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2022年初中化学实验常用仪器蒸发皿|使用注意事项
2022-09-05'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 蒸发皿知识点|使用注意事项 通常用于溶液的浓缩或蒸干。 注意事项：①盛液量不能超...
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2022年初中化学实验之常见错误总结
2022-09-05'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 1、加热固体物质用排水法收集气体时，实验完毕，先移酒精灯，后把导管从水中取出，...
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2022年初中化学实验：过滤
2022-09-05'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 过滤操作注意事项：一贴二低三靠 一贴：滤纸紧贴漏斗的内壁 二低：（1）滤纸的边缘...
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2022年初中化学常见物质的颜色
2022-09-05'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); （一）、固体的颜色 1、红色固体：铜，氧化铁 2、绿色固体：碱式碳酸铜 3、蓝色固体...
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2022年初中必考四方面化学实验知识
2022-09-05'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 一、重视探究题知识点 ①常见气体的探究。 ②常见物质的探究。实际上是下列常见离子...