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中学化学主要实验的现象描述汇总
发出蓝色的火焰,放热。 火焰呈淡蓝色,放热。 火焰明亮,伴有黑烟产生,放热、生成使石灰水变浑浊气体和使无水CuSO4变蓝的液体(水);甲烷和天然气的燃烧。 蓝色火焰明亮 ,伴有浓烈的黑烟产生,放热、生成使石灰水变浑浊气体和使无水CuSO4 变蓝的液体(水 ...
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