当前位置:首页>郑州>学科视界 | 看见科学 化启未来——郑州大学化学学院走进郑州中学开展科普实践活动

学科视界 | 看见科学 化启未来——郑州大学化学学院走进郑州中学开展科普实践活动

  • 2026-05-16 04:09:12
学科视界 | 看见科学 化启未来——郑州大学化学学院走进郑州中学开展科普实践活动

4月21日下午,郑州中学的一间教室短暂地“偏离”了日常轨道。烧杯、试剂与安全护目镜取代了课本,空气里弥漫着好奇的紧张。来自郑州大学化学学院的“引航者”们,正试图完成一次转换:将课本上沉默的化学方程式,转化为一场可观看、可触摸、甚至可“呼啸”的奇迹。

活动现场
入戏:一杯茶水的“黑与白”
“世界上一切东西的基础,都是从化学开始的。”活动伊始,郑州大学负责演示的学长用一句话定调。没有冗长的理论铺垫,实验是唯一的通行语言。
一盏清亮的黄绿色茶水静置台上,当氯化铁溶液滴入,色泽在秒针一格内沉入墨黑。惊呼未落,草酸溶液紧随其后,墨色又悄然退潮,茶水复归澄净。“这是茶叶鞣酸与三价铁离子的相遇与告别。”演示者揭秘。一个关于氧化还原的抽象概念,在颜色的剧变中有了触感。原来,化学从不是书本上冰冷的符号,而是一场充满惊喜的视觉魔术,更是解释世界的底层逻辑。
观看“黄金雨”实验
踊跃互动
真正的震撼紧随其后。“黄金雨”实验采用“视频预热+现场实操”的递进方式:学长先播放了在实验室提前录制的实验视频,一边放映,一边为同学们拆解其中的原理与关键现象;随后,他走上实验台,现场复现这一过程。当碘化铅溶液在加热中析出金黄色晶体时,璀璨碎金悬浮、翻转,细小颗粒如微型风暴在瓶中起舞——教室里鸦雀无声,金色光芒映在每一双专注的眼睛里。    
紧接着,“震荡反应”惊艳登场。溶液在琥珀色与靛蓝色之间规律变换,如同一个精确的化学钟摆。“这是碘单质在淀粉、碘酸钾与过氧化氢之间的循环反应”讲解声响起,微观世界永不停歇的生成与消耗,此刻有了呼吸般的节奏。
同学们亲手操作“硫氰化铁检验”
同学们上台操作“大象牙膏”实验
登场:从见证者到“造物主”
观演者的座位,逐渐容不下被点燃的参与感。互动环节,学生从“旁观者”变身“实践者”。“硫氰化铁检验”实验中,当自己的滴管让溶液绽开血红色时,课本上的离子方程式完成了从符号到实感的“惊险一跃”。“过饱和醋酸钠结晶”则更具诗意——玻璃棒轻触,晶体如白色藤蔓瞬间疯长,攀满整个器皿。压轴戏属于“大象牙膏”。当学生亲手将催化剂注入高浓度过氧化氢,黄白色的泡沫巨浪轰然喷发,膨胀、攀升,最终凝固成一座小小的、嘶鸣着的泡沫山丘。惊呼与掌声炸响,这不是破坏,而是一次关于分解、气体与能量的可控的轰鸣,是规律被验证时最直接的欢愉。
合影留念
回声:一粒种子的落土
这场以“理论讲解+实验演示+互动体验”为模式的科普实践活动,看似是一场充满趣味的科学盛宴,其深层脉络,是郑州中学深耕科学素养培育、推动校院协同育人、搭建“素质教育与升学教育完美融合”育人生态的生动缩影。它如同一座坚实的桥梁,一头连接着中学教育的沃土,一头通向高等学府的科学殿堂,在这里,中学生得以窥见更高层级的科学精神,也让大学基础学科教育的种子,得以在更年轻的心灵中悄然播撒。当金色的“雨滴”在中学课堂起舞,当泡沫的“山丘”在年轻的手中诞生,科学的未来,便已在这些明亮的眼眸里,开始了它的第一次化学反应。

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  1. CONNECT:[ UseTime:0.000961s ] mysql:host=127.0.0.1;port=3306;dbname=i460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001911s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001042s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.003728s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001663s ]
  6. SELECT * FROM `set` [ RunTime:0.002359s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001502s ]
  8. SELECT * FROM `article` WHERE `id` = 524528 LIMIT 1 [ RunTime:0.002465s ]
  9. UPDATE `article` SET `lasttime` = 1779096817 WHERE `id` = 524528 [ RunTime:0.006395s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000702s ]
  11. SELECT * FROM `article` WHERE `id` < 524528 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001387s ]
  12. SELECT * FROM `article` WHERE `id` > 524528 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001071s ]
  13. SELECT * FROM `article` WHERE `id` < 524528 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.005521s ]
  14. SELECT * FROM `article` WHERE `id` < 524528 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.004084s ]
  15. SELECT * FROM `article` WHERE `id` < 524528 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002258s ]
0.205613s