玉林2025届高三一模化学答案
化学答案第1页,共5页2025届高三第一次教学质量监测化学参考答案1.【详解】A.制白砂糖时用活性炭脱色为活性炭的吸附作用,属于物理变化,A错误;B.石墨烯为碳单质,不属于有机高分子材料,B错误;C.港珠澳大桥使用高性能富锌底漆防腐,锌作负极保护铁,依据的是牺牲阳极法,C错误;D.采用氢能源汽车代替燃油车,减少CO2的产生和排放,有利于“碳达峰、碳中和”,D正确;故选D。2.【详解】A.H2O2是共价化合物,电子式为,A错误;B.由系统命名法,的化学名称是3-甲基-2-戊烯,B正确;C.同素异形体指的是单质,CO、CO2是化合物,C错误;D.B的核电荷数为5,原子结构示意图为,D错误;故选B。...
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