试题与答案

根据你所学的知识回答问题。 (1)物质是由微小粒子构成的,如:二氧化碳是____

题型:填空题

题目:

根据你所学的知识回答问题。

(1)物质是由微小粒子构成的,如:二氧化碳是________构成;水银是由_________构成;食盐是由_________构成的。

(2)若用“”表示氢原子,用“”表示氧原子,则保持水的化学性质的最小粒子可以表示为_______。

(3)电解水这个变化中的最小粒子________,水蒸发变化中的最小粒子_________。

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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