分子、原子、离子是九年级化学人教版第三单元出现的三种粒子,是同学们走进化学微观世界必须认识并了解的三个“朋友”。在实际学习过程中,这些看不见、摸不着的粒子,让许多同学感觉一头雾水,几乎成了学习化学的“拦路虎”。要消除这种为难情绪,揭开化学微观世界的神秘面纱,我们可以从2016年涉及这三种粒子的部分中考试题入手,探究出三种粒子的学习策略。一、理解三种粒子构成物质的微粒性 Molecules, atoms and ions are the three kinds of particles that appear in the third unit of the ninth grade chemistry PEP. They are the three “friends” that the students must know and understand when they enter the chemical microscopic world. In the actual learning process, these invisible and inaccessible particles, so many students feel confused and almost become learning chemistry “stumbling block.” To eliminate this embarrassing mood and reveal the mystery of the chemical micro-world, we can start with some mid-term exams covering all three of these particles in 2016 and explore the learning strategies of the three kinds of particles. First, understand the three particles constitute the particulate nature