下列事实与对应的解释不相符的是( ) A.墙内开花墙外香﹣﹣分

下列事实与对应的解释不相符的是(  )

A.墙内开花墙外香﹣﹣分子不断运动

B.水烧开后,壶盖被顶开﹣﹣分子体积变大

C.甘蔗甜,柠檬酸﹣﹣不同分子性质不同

D.物质热胀冷缩﹣﹣微粒间的间隙变化

答案

【分析】根据分子的基本特征:分子质量和体积都很小;分子之间有间隔;分子是在不断运动的;同种物质的分子性质相同,不同物质的分子性质不同,结合事实进行分析判断即可.

【解答】解:A、墙内开花墙外香,是因为花香中含有的分子是在不断运动的,向四周扩散,使人们闻到花香,故A解释正确.

B、水烧开后,壶盖被顶开,发生的是物理变化,水分子本身没有发生改变,温度升高,水分子间的间隔变大,引起水的体积膨胀,壶盖被顶开,故B解释错误.

C、甘蔗甜,柠檬酸,是因为它们分子的构成不同,不同种的分子性质不同,故C解释正确.

D、物质热胀冷缩,是因为微粒间有间隙,且微粒间的间隙随着温度的改变而改变,故D解释正确.

故选:B.

 

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