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shui zhong li hua zhan fang
Author(s): 
Pages: 31
Year: Issue:  2
Journal: Experiment and Equipment for Primary School

Abstract: 探究"燃烧的条件"的实验,白磷在水下燃烧(见图1),存在三个问题:①氧气与白磷接触,实验成功率低;②白磷在水中游离,与氧气接触的时间很短,燃烧现象短暂;③需氧气量大,现制氧气,费时.改进如下.……
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