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高锰酸钾分解制取氧气
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高锰酸钾分解制取氧气
984.5k
铁丝在氧气中燃烧
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铁丝在氧气中燃烧
491.5k
水的组成
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水的组成
153.5k
粉尘爆炸
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粉尘爆炸
377.7k
一氧化碳还原氧化铁
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一氧化碳还原氧化铁
127.2k
元素大作战
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元素大作战
593.3k
测定空气里氧气的含量
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测定空气里氧气的含量
228.7k
【拓展】喷泉实验
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【拓展】喷泉实验
34k
【趣味】滴水生烟
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【趣味】滴水生烟
317.4k
二氧化碳的实验室制取与性质
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二氧化碳的实验室制取与性质
212.8k
铜与氧气反应前后质量的测定
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铜与氧气反应前后质量的测定
11.3k
简易灭火器的设计与制作
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简易灭火器的设计与制作
19.4k
原子的结构
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原子的结构
316.1k
化学方程式的配平
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化学方程式的配平
101k
石蜡的熔化
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石蜡的熔化
17.5k
氢氧化钙变质的探究
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氢氧化钙变质的探究
77.9k
【拓展】碘的升华
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【拓展】碘的升华
27.7k
【拓展】过氧化钠与二氧化碳反应
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【拓展】过氧化钠与二氧化碳反应
26.2k
【拓展】二氧化碳做喷泉实验
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【拓展】二氧化碳做喷泉实验
68.5k
【拓展】碳和浓硫酸的反应
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【拓展】碳和浓硫酸的反应
40.2k
【拓展】稀硫酸与氢氧化钡溶液反应的实质
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【拓展】稀硫酸与氢氧化钡溶液反应的实质
15.3k
【拓展】氯化氢做喷泉实验
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【拓展】氯化氢做喷泉实验
15k
【拓展】锌与硫酸做喷泉实验
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【拓展】锌与硫酸做喷泉实验
51.7k
氢氧化钠变质的探究
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氢氧化钠变质的探究
110k
【拓展】粗盐中硫酸根离子的检验
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【拓展】粗盐中硫酸根离子的检验
13.6k
【拓展】实验室制备氨气
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【拓展】实验室制备氨气
29.2k
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期末备考大串讲+自测练习【实验操作基础】
4.4k
酒精灯的火焰
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酒精灯的火焰
60.1k
浓硫酸的稀释
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浓硫酸的稀释
147k
木炭分别在空气和氧气里燃烧
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木炭分别在空气和氧气里燃烧
71.1k
轰击金箔实验
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轰击金箔实验
71.9k
检查装置气密性
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检查装置气密性
43.6k
实验室制取二氧化碳之长颈漏斗
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实验室制取二氧化碳之长颈漏斗
198.4k
实验室制取氢气之排水法
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实验室制取氢气之排水法
43.4k
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第四单元 课题2 水的净化
11.6k
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第四单元 课题3 水的组成
7.5k
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第三单元 课题1 分子和原子
11.4k
加热氯酸钾制取氧气
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加热氯酸钾制取氧气
149.4k
观察与描述蜡烛及其燃烧
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观察与描述蜡烛及其燃烧
41k
探究酸碱盐的成分
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探究酸碱盐的成分
23.6k
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第五单元 课题1 质量守恒定律
11.1k
金属的活动性顺序
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金属的活动性顺序
62k
配制两种质量分数不同的氯化钠溶液
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配制两种质量分数不同的氯化钠溶液
17.2k
硫分别在空气和氧气中燃烧
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硫分别在空气和氧气中燃烧
79.5k
过氧化氢分解
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过氧化氢分解
87.8k
氧气的助燃性
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氧气的助燃性
75.3k
用肥皂水区分软水和硬水
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用肥皂水区分软水和硬水
22.7k
实验室用简易装置制取蒸馏水
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实验室用简易装置制取蒸馏水
23.1k
实验室常用的蒸馏装置
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实验室常用的蒸馏装置
48.4k
过滤液体
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过滤液体
68.3k