河北省2019年中考化学复习主题一身边的化学物质专项(四)金属活动性顺序探究与应用课件.pptx

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TOPIC ONE,主题一 身边的化学物质,专项(四) 金属活动性顺序探究与应用,1.金属活动性顺序的判断依据,方法1:金属是否与O2反应或与O2反应的难易和剧烈程度。 方法2:金属是否与酸反应或与酸反应的剧烈程度。 方法3:一种金属能否把另一种金属从其盐溶液中置换出来。,2.金属活动性顺序探究,(1)实验方案设计,硫酸铜,硫酸亚铁,铁片,硫酸锌,硫酸铜,锌片,铜片,硫酸亚铁,(2)实验注意事项 实验前金属必须打磨,除去表面的氧化膜或污物; 金属与酸反应时,一般选用稀硫酸或稀盐酸,不用硝酸或浓硫酸; 金属与酸反应若比较剧烈程度,则要注意控制变量,如温度、酸的种类、体积、溶质的质量分数、金属的颗粒大小等; 金属与盐的反应,盐必须 ,金属铁对应的盐溶液必须选 。,2.金属活动性顺序探究,可溶,亚铁盐溶液,

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