分子和原子一牵涉及到的化学基本概念多，而且又比较抽象，同学们在学习时常感到困难，现对同学们常碰到疑难的问题解答如下：1．分子能否保持物质的物理性质？答；分子不能保持物质的物理性质。因为物质的物理性质，如颜色、状态、熔点、沸点、密度、硬度等，都是由许许多多分 The basic concepts of chemistry involved in molecules and atoms are numerous and abstract, and students often find it difficult to learn. Now the answers to the questions that students often encounter are as follows: 1. Can the molecules maintain the physical properties of the material? Answer: The molecule cannot maintain the physical properties of matter. Because of the physical properties of matter, such as color, state, melting point, boiling point, density, hardness, etc.