九年级化学下册第九章现代生活与化学9.3化学能的利用同步课件(新版)粤教版.ppt

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9.3 化学能的利用,常 考 透 视,第九章 现代生活与化学,常考透视,常考1 能说出能源的种类和特点。,【出题角度】能源的种类、特点及对环境影响的综合考查。,典例 “绿色能源”不会产生或残留对环境造成污染的物质。下列能源中不能称为“绿色能源”的是( ) A铅蓄电池 B氢能 C风能 D太阳能,A,解析 铅蓄电池需充电,不能彻底摆脱化石燃料的使用,且废旧电池处理不好会造成环境污染;氢能、风能和太阳能都是新能源,绿色无污染,可再生,有广阔的应用前景。,方法透视 “绿色能源”不会对环境产生影响,主要有太阳能、风能、水能、潮汐能等。,【试题链接】 小试身手 1、2、4,直击中考 5、7,常考2 能结合能源的利用判断能源的转化。,典例 下列有关能量的认识的说法中正确的是( ) A太阳能热水器将太阳能转化为化学能 B新能源汽车不需要任何能源 C食物在人体内消化,将化学能转化为热能 D燃料燃烧,只将化学能转化为热能,【出题角度】考查能源的转化与综合利用。,C,解析与答案,方法透视 判断能量转化的类型时,关键需要判断能量最初的存在形式和最终的应用形式。,【试题链接】小试身手 3,直击中考 6,

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