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洋葱化学
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九年级上册
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7.燃料及其利用
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1.燃烧和灭火.mp4 (10.70MB)
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6.碳和碳的化合物
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3.实验:二氧化碳的制取.mp4 (11.82MB)
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2.二氧化碳的性质.mp4 (14.51MB)
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1.碳的单质.mp4 (13.83MB)
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5.化学方程式
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5.化学方程式相关计算.mp4 (12.31MB)
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4.化学方程式的书写.mp4 (13.30MB)
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3.化学方程式.mp4 (8.99MB)
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2.质量守恒定律的运用.mp4 (10.79MB)
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1.质量守恒定律.mp4 (11.57MB)
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4.自然界的水
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3.化合价.mp4 (10.09MB)
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2.化学式.mp4 (8.37MB)
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1.单质与化合物.mp4 (11.86MB)
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3.物质构成的奥秘
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9.离子的电性.mp4 (11.20MB)
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8.离子的形成.mp4 (10.40MB)
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7.原子核外电子的排布.mp4 (16.13MB)
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6.构成原子的微粒.mp4 (14.49MB)
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5.分子和原子.mp4 (10.49MB)
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4.从微观角度看化学变化.mp4 (10.24MB)
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3.从微观角度看物理变化.mp4 (10.14MB)
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2.微粒的特征.mp4 (11.88MB)
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12.元素周期表.mp4 (15.67MB)
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11.元素的定义.mp4 (11.69MB)
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10.相对原子质量.mp4 (18.42MB)
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1.构成物质的微粒.mp4 (12.34MB)
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2.空气和氧气
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6.催化剂.mp4 (10.74MB)
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5.实验:氧气的制取.mp4 (13.62MB)
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4.氧气的化学性质.mp4 (8.61MB)
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3.空气中各成分的用途.mp4 (11.69MB)
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2.实验:测空气中氧气的含量.mp4 (15.92MB)
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1.空气的组成.mp4 (13.49MB)
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1.走进化学世界
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4.药品的取用.mp4 (22.16MB)
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3.认识实验仪器.mp4 (10.43MB)
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2.物理性质与化学性质.mp4 (14.75MB)
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1.物理变化与化学变化.mp4 (18.21MB)
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2.工业流程题
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2.2.2工业流程题真题演练2.mp4 (12.78MB)
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2.2.2工业流程题真题演练1.mp4 (13.54MB)
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2.2.1树状图(下)3.mp4 (11.12MB)
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2.2.1树状图(上)2.mp4 (11.56MB)
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2.2.1单线图1.mp4 (11.99MB)
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2.2.1并行图4.mp4 (11.49MB)
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2.1.1工业流程题揭秘.mp4 (4.56MB)
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1.判断题
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1.3.1物质之间的转化2.mp4 (10.20MB)
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1.3.1物质之间的反应1.mp4 (10.00MB)
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1.3.1推断题真题演练3.mp4 (15.74MB)
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1.2.2推断题真题演练2.mp4 (12.62MB)
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1.2.2推断题真题演练1.mp4 (11.61MB)
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1.2.1物质的元素组成2.mp4 (10.53MB)
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1.2.1物质的特征1.mp4 (13.30MB)
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1.2.1典型反应现象4.mp4 (10.82MB)
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1.2.1典型反应条件3.mp4 (10.82MB)
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1.1.1推断题揭秘.mp4 (9.40MB)
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01中考总复习介绍视频.mp4 (8.86MB)
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