【记者在现场】 身边的化学 "烷动力脉冲炮""火焰掌""人造云雾"……一场以"'化'彩缤纷——身边的化学"为主题的科普讲座近日在 甘肃科技馆开讲。兰州城市学院化学工程学院副教授李涛带领300余名青少年跳出课本，探寻生活里的 化学密码。 "这些日用品为何能清洁去污？背后藏着哪些化学学问？"讲座刚开始，李涛从日用品切入，举起牙膏、 洗洁精等生活用品向台下同学提问。 紧接着，他以"大象牙膏"的实验迅速点燃全场氛围，白色泡沫从水盆中喷薄而出，孩子们被眼前的景象 深深震撼，惊叹声此起彼伏。李涛随即解读其中的原理。 之后，李涛拿出几瓶碳酸饮料，邀请孩子们上台参与实验。"酸与碱相遇会发生什么？"在"化学彩虹"实 验环节，他以饮料瓶为道具，调配不同浓度的溶液，生动呈现出绚丽的"化学彩虹"，一边引导孩子们观 察颜色变化，一边拆解原理为大家讲解化学知识。 在液氮实验中，他邀请孩子们近距离感受零下196摄氏度的极致低温——将玫瑰花放入液氮罐内，柔软 的花瓣片刻便变得脆硬，轻轻一捏便碎成冰晶……讲座尾声时，大家意犹未尽，纷纷举手提问，一粒粒 科学种子正在悄然生根。 责任编辑：宋菲菲 新甘肃·甘肃日报记者 吴涵 ...

Group 1 - The competition titled "Chemistry is Everywhere" attracted over 300 science enthusiasts from more than 40 cities across the country [1] - A total of 17 outstanding works were selected for the finals after a rigorous preliminary evaluation by an expert panel [1] - The final event featured presentations from participants in two categories: youth and adult, focusing on the creative background, thought process, and educational value of their works [1] Group 2 - Youth participants explored topics such as "saltwater power generation," "urban heat island effect," and innovative interpretations of "bubble magic" [1] - Adult participants concentrated on the multi-field applications of chemistry and innovative science communication, designing fluorescent products based on carbon quantum dots and experiments based on the chemical properties of tea polyphenols [1] - The final evaluation resulted in the awarding of 2 first prizes, 5 second prizes, and 10 third prizes [1] Group 3 - The competition was co-hosted by Beijing University of Chemical Technology, the Chinese Chemical Society, the Royal Society of Chemistry, and the Chemical Industry Press, with the Quzhou Resource Chemical Innovation Research Institute as the organizer [1]

Group 1 - The core activity involved a summer chemistry science experience for elementary school students, organized by Hebei University of Chemical Technology and Medicine [1][2] - The event featured three main "magic show" areas that transformed abstract chemistry concepts into engaging experiments, such as the "Rainbow Tower" demonstrating oil floating on water, and the blue fluorescence revealing the connection between luminol and forensic blood detection [1][2] - The "Magic Apprentice Practice Class" allowed children to participate hands-on, with experiments like the color-changing purple cabbage juice and the "magic lollipop" stirring potassium permanganate solution, fostering a strong interest in chemistry among the participants [2] Group 2 - The event received positive feedback from parents, who noted their children's excitement about chemistry and aspirations to become scientists [2] - As a national-level vocational education experience base, the institution actively fulfills its social service role by innovating science popularization education and vocational experience formats to enhance youth scientific literacy [2]