写出符合下列要求的化学反应的文字表达式,注明类型(化合反应、

写出符合下列要求的化学反应的文字表达式,注明类型(化合反应、分解反应)

①燃烧时火星四谢,生成黑色固体                                   

②氯酸钾和二氧化锰混合制氧气                                      

答案

+氧气  四氧化三铁 (化合反应)

 氯酸钾   氯化钾+氧气(分解反应)

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