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3、目前下列化学制品在生活中不准使用的是 (   )

  A.含磷洗衣粉       B.可降解塑料袋 

C.高效低毒蚊香      D.合成纤维衣服

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2、某固体物质受热后变为气态物质,这种变化属于:(   )     A.物理变化              B.可能是物理变化,也可能是化学变化

    C.化学变化              D.既不是物理变化,也不是化学变化

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1、下列变化属于化学变化的是(      )

    A.石块雕成石狮                 B.海水蒸发得到食盐

    C.铁生锈                       D.自行车轮胎受热爆炸

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36、①___________________________________________________、

②_________________________________________________________________________、

③__________________________________________________________________________

④___________________________________________________________________

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35、⑴①________________②________________

⑵①_____________、②__________、③________________________________________

④_____________________________________________________________________

⑤________________________________⑥_____________________________________

⑦____________________________________________________________________

⑶①______________、②____________、③_________________________________________

④_____________________________________________________________________

⑷①_____________________________________________________________________

②___________________________________________________________________

⑸______________、____________

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34、____________、____________、___________、_______________

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33、⑴_____________⑵_____________⑶_____________

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32、⑴_______________________________________________、______________________

⑵______________________________________________、______________________

⑶_______________________________________________、______________________

⑷________________________ ______________________、______________________

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31、⑴______________⑵______________⑶_______________⑷______________

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30、⑴______________⑵______________⑶_______________⑷______________

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