(4分) 现有①氧气 ②自来水 ③铁粉 ④二氧化碳 ⑤氯酸钾 ⑥氮气 ⑦

(4分) 现有①氧气 ②自来水 ③铁粉 ④二氧化碳 ⑤氯酸钾 ⑥氮气 ⑦澄清的石灰水 ⑧空气 八种物质。
其中属于混合物的是(填序号,下同) ____________;属于单质的是________________;
属于化合物的是             ;属于氧化物的是____________。

答案

属于混合物的是:②、②、⑧  属于单质的是①、③、⑥
属于化合物的是:④、⑤     属于氧化物的是:④解析:
混合物是由多种物质组成的物质.单质是由同种元素组成的纯净物.化合物是由不同种元素组成的纯净物.氧化物是由两种元素组成并且一种元素是氧元素的化合物.可以根据以上物质的物质组成和元素组成进行分析、判断.

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