2018年中考化学真题分类汇编1物质的构成和变化考点5物质的变化与性质1物质的变化2物理变化(无答案).doc

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1物质的构成和变化 考点 5 物质的变化与性质(18 河南)1. 生活中的下列变化,属于物理变化的是 【 】A.蜡熔化 B.铁生锈 C.米酿酒 D.纸燃烧(18 安顺)1、下列对自然资源利用的过程中只发生物理变化的是( )(18 乐山)18下图所示的家庭小实验中,主要发生物理变化的是( )制取明矾晶体 净水 自制汽水 将鸡蛋壳放入醋中A B C D(18 哈尔滨)3.下列过程中只发生物理变化的是-( C)2A.电解水 B.铁钉生锈 C.品红在水中扩散 D.测定空气里氧气含量(18 广州)2.下列属于物理变化的是A.铁锅生锈 B.蜡烛燃烧 C.粮食酿酒 D.水结成冰(18 威海)4对立统一是物质运动的普遍规律,下列一描述的是两种物质的性质业变化,其中属于物质的物理性质或物理变化的是氧气的氧化性和一氧化碳的还原性 水的气化和氦气的液化氯化钠的溶解和硝酸钾结晶 盐酸的酸性氢氧化钠的碱性A B C D.

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