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某同学对蜡烛(主要成分是石蜡)及其燃烧进行了如下探究.请填写下列空格: (1)取一支蜡烛,用小刀切下一小块,把它放入水中,蜡烛浮在水面上.
A student studied the candle (the main ingredient is paraffin) and its burning as follows. Please fill in the following spaces: (1) Take a candle, cut a small piece with a knife, and put it into water. The candle floats on the water. .