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True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
五年级写科学小实验的作文-酒精实验
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UyKX4nan
Canada
19 Posts
Posted - 10/03/2024 : 23:24:25
五年级写科学小实验的作文-酒精实验1.我将 [url=
https://www.12ka.cc/0q2p74be.html
]2024年属虎工作方位,属猪运气测试 婚姻怎么样[/url] 金属托盘放在桌子上,上面点亮酒精灯。2.我将硬币放入玻璃杯中,然后加入水,直到硬币完全被淹没。3.我用滴管小心地向玻璃杯中滴入少量酒精。**观察:**当我滴入 [url=
https://www.ddrtx.net/4qe2pgdr.html
]常翊字取名寓意男孩,18年10月份出生的孩子取名[/url] 酒精时,我注意到以下现象:*硬币周围的水滴形成了一个透明的薄膜。*硬币表面出现了气泡,越来越大。*气泡上升到玻璃杯的顶部,然后破裂。*硬币慢慢地漂浮起来,直到漂浮在水面上。**解释:**实验结果表明,酒精具有 [url=
https://www.mljs.cn/sm2u5k85.html
]牛宝宝男孩最佳取名字是什么,刘姓男孩取名大全带喜字 起名的含义[/url] 降低水表面张力的特性。当酒精滴入水中时,它打破了水分子之间的键,导致表面张力减小。这使得硬币更容易克服水的阻力并漂浮起来。气泡的形成是由于酒精蒸发造成的。当酒精蒸发时,它带走了水分子,从而在硬
SouQuan.Wang
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