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复习课件 | 自制户外火锅燃料——燃料的变迁与合理使用

  • 2026-04-08 10:34:48
复习课件 | 自制户外火锅燃料——燃料的变迁与合理使用

前 言

以“自制户外火锅燃料"为情境,开展初中化学跨学科微项目式教学活动"燃料的变迁与合理使用"。通过"选择燃料、调控燃烧、自制并使用燃料、展望未来燃料"四个核心任务,引导学生逐步学会综合考虑安全性、污染性等因素合理选择和使用燃料,形成一般的思路和方法。从化学视角探讨火锅燃料对环境的影响,树立环保意识,增强科学态度与社会责任感。

向上滑动查看教学思路

  1. 1 魔术引人,创设情境

    [演示]"掌中火"魔术(点燃手中的丁烷泡泡)。[提问]结合所学知识,这其中的奥秘是什么?[学生]空气中有氧气,手中泡泡有可燃性气体,因此点燃即可在手中燃烧。

    [引入]正是因为懂得了生火的原理,人类才开始吃上了热腾腾的食物,比如我国传统美食火锅,下有火,上有锅,简称火锅。今天我们聚焦火锅的火,学习燃料的变迁与合理使用,自制户外火锅燃料。

  2. 设计意图:通过"掌中火"小实验,激发学习兴趣。结合当前冬季的热门美食火锅,自制户外火锅燃料吃火锅,让学生体会到化学来源于生活,又应用于生活。

  3. 2任务1:以史为鉴,选择燃料

  4. [提问]同学们在吃火锅时,使用了哪些燃料呢?

  5. [学生]燃气瓶、电磁炉、木炭、固体酒精等。

    [过渡]早在四千多年前新石器时代就出现了火锅的雏形,请在学案上连一连,推测不同时期的火锅燃料,并思考燃料的变迁与哪些因素有关呢?

      1. .........

      01

      2026年中考化学复习课件(陆续更新中)

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      02

      2025版中考化学复习课件

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      1. CONNECT:[ UseTime:0.000974s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
      2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001436s ]
      3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001002s ]
      4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000585s ]
      5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001139s ]
      6. SELECT * FROM `set` [ RunTime:0.000469s ]
      7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001455s ]
      8. SELECT * FROM `article` WHERE `id` = 491035 LIMIT 1 [ RunTime:0.000945s ]
      9. UPDATE `article` SET `lasttime` = 1775633687 WHERE `id` = 491035 [ RunTime:0.017532s ]
      10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000621s ]
      11. SELECT * FROM `article` WHERE `id` < 491035 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001147s ]
      12. SELECT * FROM `article` WHERE `id` > 491035 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000854s ]
      13. SELECT * FROM `article` WHERE `id` < 491035 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001510s ]
      14. SELECT * FROM `article` WHERE `id` < 491035 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.002051s ]
      15. SELECT * FROM `article` WHERE `id` < 491035 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001562s ]
      0.208670s