试题与答案

下列变化过程中既有物理变化又有化学变化的是 A.活性炭吸附冰箱中的异味 B.干冰

题型:选择题

题目:

下列变化过程中既有物理变化又有化学变化的是

A.活性炭吸附冰箱中的异味

B.干冰汽化

C.点燃蜡烛

D.分离液态空气制取氧气

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C

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