精品解析:2022年内蒙古包头市中考化学真题(解析版)
【淘宝搜索店铺:中小学教辅资源店微信:mlxt2022】化学可能用到的相对原子质量:H-1C-12O-16Na-23C1-35.5一、选择题(本题包括6个小题,每小题2分,共12分。每小题只有一个选项符合题意,请将答题卡上对应题目的答案标号涂黑)1.2022年北京冬奥会在世界上首次采用CO2跨临界直冷制冰技术,其原理是将液态CO2蒸发吸热,使水变成冰实现制冷。其中CO2由液态转化为气态的过程中,从微观角度分析发生改变的是A.分子的种类B.分子间的间隔C.分子的质量D.分子的大小【答案】B【解析】【详解】CO2由液态转化为气态的过程中,分子之间的间隔发生了改变,分子的大小、质量、种类均不改变。故...
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