最佳答案:Not long ago, I saw on TV news from Shanghai Zoo a giraffe get sick, finally not
最佳答案:中文钾遇水反应现象的实验分析探求钾与水反应现象的本质.实验证明,在敞开体系下,钾与水反应并发生燃烧,燃烧的实质是钾及反应生成的氢气分别在空气中燃烧.在煤油作保护
最佳答案:Chemical class is the compulsory course in the middle school.It is one of my fav
最佳答案:Purpose:to see what will happen if oil drops on waterEquipment:a glass bottle,wa