怎样有效地提高化学概念教学的效果 ,是摆在每个化学教师面前的难题。本文根据化学概念的特点 ,利用概念教学中应处理好的十大关系 ,探讨优化概念教学的对策。一、内涵与外延的关系内涵是指概念的本质属性 ,而概念的外延则是指概念的适用对象、范围等。例如 ,同位素概念的内涵 How to effectively improve the effectiveness of the teaching of chemistry concepts is a difficult problem confronting every chemistry teacher. According to the characteristics of the chemical concept, this article uses the ten relationships that should be dealt with in the concept teaching to explore strategies for optimizing the concept of teaching. First, the relationship between connotation and extension Connotation refers to the essential nature of the concept, while the extension of the concept refers to the applicable object and scope of the concept. For example, the concept of isotope