氧气的实验室制取

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1、氧气的制取实验A_______________B_______________C________________D_______________E______________实验制取氧气装置的要求：１、试管口必须____________，以防止_____________________２、铁夹应夹___________________________________________；３、导管______________________________________________；４、如果是高锰酸钾，试管口__________________

2、，以防止______________________________________________________；５、药品必须_________________________________________；６、酒精灯的________________________________________；实验制取氧气装置的步骤：１、_________________________________________________２、__________________________________；３、___________________

3、_____________________________；４、_________________________________________________５、____________________________________________________６、_________________________________________；７、____________________________________________________１、____________2、______________________；３、_

4、_____________________实验制取氧气装置的步骤：１、_________________________________________________２、__________________________________；３、________________________________________________；４、_________________________________________________５、__________________________________________________

5、__６、_________________________________________；７、____________________________________________________