在①冰水混合物;②二氧化硫;③高锰酸钾;④矿泉水;⑤食盐水;

在①冰水混合物;②二氧化硫;③高锰酸钾;④矿泉水;⑤食盐水;⑥液氮;⑦银白色的细铁丝中,属于混合物的是______________   (填序号,下同);属于纯净物的是___________

答案

④⑤,①②③⑥⑦

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