This book is a practice book for Chemistry (2nd edition), a specialized textbook for Chinese Government Scholarship Students, which is suitable for preparatory students who come to China to study related majors, aiming at facilitating the conversion of students’ knowledge of chemistry from their mother tongue to Chinese and improving their application skills. The book simplifies and summarizes the important knowledge in the textbook and extracts the basic knowledge and expressions students needed,which reduces their burden of text reading and facilitates their learning. It adds some examples and practices of the corresponding knowledge in each chapter, supplemented with detailed analyses, and also provides detailed analyses and explanations of the exercises of the textbook.