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高中化学必修二ppt | 19 化学反应与能量变化课时练习

  • 2026-04-03 11:24:28
高中化学必修二ppt | 19 化学反应与能量变化课时练习
前言：以下是本人林含键课堂教学课件分享（前面已分享了必修二18个课件和必修一55个课时的课件合集【高中化学必修一ppt】55 期末模拟卷讲评）。课件获取方式请看文末指引（禁止未授权的二次传播或商用，原创不易，感谢理解！
这一节针对化学反应与热能、电能的转化进行练习，从题目中获取知识点和考点，再讲评课时练习4。
简单回顾上节课化学电池相关内容。
对应上节课学习的设计原电池。
教材练习用起来。
通过这两道题，理解原电池的作用：判断金属活性和加快反应速率。
通过这道题，说明正负极的判断，跟电解质溶液有关。
讲评课时练习4
感谢你的宝贵时间，若你认可我的课件内容，欢迎点个小爱心，敬请继续关注：
如需获取课件（可编辑修改，包括图片视频素材），按下列步骤操作：
步骤一：点击下方“喜欢作者”赞赏7元以上（课件制作不易，感谢理解）
步骤二：完成步骤一的基础上，在公众号对话框留言“必二19”，我看到后会回复下载链接。
若想要必修一整套的课件或是未来必修二整本书的课件（网盘链接），用来修改使用，可加我微信询价购买，扫码添加为好友备注“地区+姓名”。
相关链接：
高中化学必修二ppt | 18 化学电池
高中化学必修二ppt | 17 原电池
高中化学必修二ppt | 16 能源和焓变
高中化学必修二ppt | 15 周末练习1
高中化学必修二ppt | 14 化学反应与热能
高中化学必修二ppt | 13 第五章整理与提升
高中化学必修二ppt | 12 无机非金属材料课时练习
高中化学必修二ppt | 11 无机非金属材料
高中化学必修二ppt | 10 硝酸和酸雨及防治
高中化学必修二ppt | 09 铵根离子的检验、氨气的制备和硝酸
高中化学必修二ppt | 08 氨和铵盐
高中化学必修二ppt | 07 氮气和氮的氧化物
高中化学必修二ppt | 06 硫及其化合物课时练习
高中化学必修二ppt | 05 粗盐提纯及不同价态含硫物质的转化
高中化学必修二ppt | 04 硫酸根离子的检验
高中化学必修二ppt | 03 硫酸
高中化学必修二ppt | 02 二氧化硫的化学性质
高中化学必修二ppt | 01 硫和二氧化硫
必修一合集：【高中化学必修一ppt】55 期末模拟卷讲评
本文来自网友投稿或网络内容，如有侵犯您的权益请联系我们删除，联系邮箱：wyl860211@qq.com 。

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  1. CONNECT:[ UseTime:0.001035s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001387s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000735s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000716s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001396s ]
  6. SELECT * FROM `set` [ RunTime:0.000659s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001463s ]
  8. SELECT * FROM `article` WHERE `id` = 495017 LIMIT 1 [ RunTime:0.003022s ]
  9. UPDATE `article` SET `lasttime` = 1775433415 WHERE `id` = 495017 [ RunTime:0.001466s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000693s ]
  11. SELECT * FROM `article` WHERE `id` < 495017 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001450s ]
  12. SELECT * FROM `article` WHERE `id` > 495017 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001272s ]
  13. SELECT * FROM `article` WHERE `id` < 495017 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005019s ]
  14. SELECT * FROM `article` WHERE `id` < 495017 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005362s ]
  15. SELECT * FROM `article` WHERE `id` < 495017 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.003366s ]
0.183003s