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从宏观与微观两个方面学习化学,是化学不同于其他学科的特点,也是化学学科最具特征的思维方式。化学中,对宏观与微观的联系在近几年的中考试题中有充分体现。案例例1:生活中的下列现象,用分子的相关知识加以解释,其中不正确的是()A.室内插花,满室飘香,说明分子不断运动B.热胀冷缩,说明分子大小随温度而改变C.10 mL酒精和10 mL水混合后,体积小于20 mL,说明分子之间有间隔D.湿衣服放在火炉旁,干得较快,说明分子运动
Learning chemistry from both a macroscopic and a microscopic perspective is a feature that distinguishes chemistry from other disciplines, and is the most characteristic way of thinking in chemistry. In chemistry, the relationship between macro and micro is fully reflected in the examination questions in recent years. Case Example 1: The following phenomena in life are explained by using molecular knowledge. The incorrect ones are () A. Indoor flower arrangement, full of fragrance, indicating that the molecules continue to move. B. Thermal expansion and contraction, indicating that the molecular size After changing the temperature and changing the volume of C.10 mL of alcohol and 10 mL of water, the volume is less than 20 mL, indicating that there is a gap between the molecules. D. Wet clothes are placed next to the stove and dried faster, indicating molecular motion.