在镁条燃烧实验中,最能说明该变化是化学变化的现象是(    ) A

在镁条燃烧实验中,最能说明该变化是化学变化的现象是(   

A.镁条变短                               B.放出大量的热

C.发出耀眼的白光                         D.生成白色粉末状固体

答案

D

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