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初中化学全部微课
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扫码每天推送不定期福利哦.jpg (27.41KB)
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教程补充说明.url (209.00Bytes)
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91.使用合成材料对人和环境的影响.mp4 (20.04MB)
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90.有机合成材料.mp4 (16.73MB)
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89.有机化合物.mp4 (16.80MB)
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88.化学元素与人体健康.mp4 (13.59MB)
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87.维生素与人体健康的关系.mp4 (19.51MB)
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86.油脂与人体健康的关系.mp4 (20.26MB)
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85.糖类与人体健康的关系.mp4 (15.71MB)
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84.蛋白质与人体健康的关系.mp4 (13.99MB)
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83.粗盐中难溶性杂质的去除.mp4 (11.32MB)
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82.化肥的简易鉴别.mp4 (17.18MB)
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81.化肥简介.mp4 (9.93MB)
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80.碳酸钠、碳酸氢钠和碳酸钙.mp4 (15.94MB)
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8.空气的成分、污染及防治.mp4 (13.25MB)
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79.某些酸、碱、盐之间是否发生反应.mp4 (12.30MB)
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78.复分解反应.mp4 (16.56MB)
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77.氯化钠.mp4 (28.72MB)
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76.溶液酸碱性的检验.mp4 (26.73MB)
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75.酸和碱的化学性质.mp4 (27.77MB)
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74.溶液酸碱度的表示方法.mp4 (47.78MB)
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73.中和反应在实际中的应用.mp4 (20.95MB)
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72.中和反应.mp4 (12.33MB)
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71.碱的化学性质.mp4 (12.82MB)
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70.几种常见的碱.mp4 (12.17MB)
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7.测定空气中氧气的含量.mp4 (11.05MB)
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69.酸的化学性质.mp4 (14.51MB)
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68.碱的化学性质的探究.mp4 (39.33MB)
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67.酸的化学性质的探究.mp4 (18.15MB)
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66.浓硫酸的腐蚀性和浓硫酸的稀释.mp4 (18.00MB)
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65.几种常见的酸.mp4 (20.88MB)
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64.一定溶质质量分数的氯化钠溶液的配制.mp4 (28.49MB)
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63.溶质的质量分数.mp4 (25.55MB)
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62.溶解度.mp4 (12.84MB)
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61.饱和溶液和不饱和溶液.mp4 (13.33MB)
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60.溶解时的吸热和放热.mp4 (13.98MB)
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59.溶液【】.mp4 (12.38MB)
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58.金属铜化学性质的探究.mp4 (13.34MB)
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57.金属的物理性质和某些化学性质.mp4 (15.36MB)
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56.金属资源保护.mp4 (29.35MB)
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55.金属的锈蚀与保护.mp4 (12.88MB)
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54.铁制品锈蚀的条件.mp4 (12.78MB)
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53.金属的冶炼.mp4 (9.27MB)
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52.金属与氧气的反应.mp4 (22.37MB)
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51.金属活动性顺序.mp4 (26.33MB)
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50.几种常见的金属.mp4 (13.18MB)
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49.合理利用和开发化石能源.mp4 (14.19MB)
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48.化石燃料的利用.mp4 (23.74MB)
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47.使用燃料对环境的影响.mp4 (15.87MB)
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46.化学反应中的能量变化.mp4 (19.37MB)
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45.燃烧的条件实验.mp4 (12.12MB)
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44.易燃物和易爆物的安全知识.mp4 (12.60MB)
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43.灭火的原理探究.mp4 (12.41MB)
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42.灭火的原理和方法.mp4 (16.28MB)
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41.燃烧的条件.mp4 (18.99MB)
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40.二氧化碳的实验室制取.mp4 (18.30MB)
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39.一氧化碳.mp4 (21.59MB)
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38.二氧化碳对生活和环境的影响.mp4 (14.40MB)
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37.二氧化碳的性质.mp4 (13.77MB)
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36.实验室里制取二氧化碳的装置.mp4 (10.84MB)
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35.二氧化碳制取的研究.mp4 (12.10MB)
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34.碳的单质.mp4 (12.95MB)
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33.单质碳的化学性质.mp4 (10.32MB)
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32.根据化学反应方程式进行计算.mp4 (23.08MB)
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31.如何正确书写化学方程式.mp4 (8.55MB)
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30.质量守恒定律.mp4 (9.99MB)
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29.化合价.mp4 (11.70MB)
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28.化学式.mp4 (9.70MB)
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27.有关相对分子质量的计算.mp4 (8.58MB)
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26.水的组成.mp4 (30.79MB)
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25.水的净化.mp4 (12.46MB)
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24.海水晒盐.mp4 (22.92MB)
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23.元素周期表.mp4 (15.12MB)
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22.元素符号.mp4 (9.00MB)
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21.元素.mp4 (9.71MB)
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20.原子核外电子排布.mp4 (11.66MB)
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19.相对原子质量.mp4 (10.95MB)
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18.原子的构成.mp4 (30.95MB)
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17.分子的性质.mp4 (12.92MB)
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16.分子运动现象.mp4 (14.42MB)
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15.物质由微粒构成.mp4 (12.50MB)
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14.氧气的实验室制取.mp4 (16.70MB)
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13.化合反应与分解反应.mp4 (11.05MB)
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12.催化剂.mp4 (11.82MB)
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11.制取氧气.mp4 (17.58MB)
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10.氧气的性质和用途.mp4 (16.94MB)
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09.空气中各种成分的用途.mp4 (18.33MB)
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06.走进实验室.mp4 (45.84MB)
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05.仪器的连接和药品的取用.mp4 (18.57MB)
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04.吸入的空气和呼出的气体有什么不同.mp4 (21.94MB)
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03.蜡烛及其燃烧的探究.mp4 (11.76MB)
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02.物质的性质.mp4 (15.81MB)
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01.物质的变化.mp4 (14.49MB)
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