燃烧是一种普遍存在的化学反应现象．（1）若要可燃物在空气中燃烧，还需要的条件是

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（1）物质的燃烧的条件是：可燃物、与氧气接触、达到着火点，三者缺一不可．所以若要可燃物在空气中燃烧，还需要的条件是可燃物的温度达到着火点．
（2）①铁丝在氧气中可剧烈燃烧，火星四射，同时有黑色物质生成；反应的化学方程式为3Fe+2O₂ 

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