Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO第二章第二章 1-31-3 节复节复习习Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO 写出硫、木炭、红磷、铁丝在氧气中燃烧时化学方程式C ＋ O2点燃CO24P ＋ 5O2点燃 2P2O5S ＋ O2SO2点燃3Fe+2O2=====Fe3O4点燃左反右生一横线，配平之后又一线，横线上面写条件，箭头标气或沉淀。Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO各物质在氧气中燃烧发出白光，生成气体能使石灰水变浑浊火星四射，生成黑色固体 明亮的蓝紫色火焰 , 生成具有刺激性气味的气体发出白光，同时生成浓厚白烟硫铁丝碳磷Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO质量守恒定律参加化学反应的各物质的质量总和等于反应后生成的各物质的质量总和 .12g 的碳在 20g 的氧气中燃烧，生成二氧化碳的质量是多少？请你计算Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO 烟花中硝酸钾（ KNO3）、硫黄、木炭三种物质在点燃条件下能反应生成氮气、二氧化碳和硫化钾。写出发生的化学方程式： 2KNO3+S+3C==N2↑+3CO2↑+K2S点燃化学反应前后原子的种类原子的数目不变质量守恒定律的微观解释Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO“2·26” 普宁市村民非法燃放烟花为什么会发生这样大的爆炸事故？燃烧以极快的速度在有限的空间里发生，瞬间内积累大量的热，使气体急剧地膨胀，就会引起爆炸。Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO灭火和自救措施Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO智力大挑战菜鸟级老鸟级大虾级骨灰级Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO写出过氧化氢制氧气的化学方程式液体不加热型Presented ByPresented ByHarry Mills /Harry Mills / PRESENTATIONPRO PRESENTATIONPRO收集氧气的方法排水集气法向上排空气法将带火星的木条放在集气瓶口，若木条复燃，证明已满。Presented ByPresented ByHarry Mills /Har...
