“海水中的化学”是义务教育教科书(五四制)鲁教版初中化学九年级第三单元的内容。该单元共包括三节内容:“海洋化学资源”“海水晒盐”“海水制碱”。酸碱盐知识是初中化学元素化合物知识的核心。本单元以海水为载体,在第二单元酸碱知识的基础上继续学习盐的相关知识。教材在设计上先整体引领学生认识海洋中蕴藏着丰富的资源,再从局部角度引领学生认识海水中与人类密切相关的资源——食盐的相关内 “Chemistry in the Sea ” is compulsory education textbook (May 4 system) Lu education version of junior high school chemistry ninth unit third unit content. The unit includes a total of three sections: “Marine Chemical Resources ” “Sea salt water ” “seawater alkali ”. Acid salt knowledge is the core of knowledge of junior chemical compounds. This unit takes seawater as the carrier, and continues to learn salt related knowledge based on the knowledge of the second unit of acid and alkali. Teaching materials in the overall design to lead students to understand the ocean is rich in resources, and then from a local point of view to lead students to recognize the seawater and human resources are closely related to the salt