METHODOLOGY
The analysis of textbooks has involved a qualitative approach for achieving the aim described above. For this purpose, 30 first-year university chemistry textbooks25-54 have been analyzed, These texts are well-known first-year chemistry textbooks that have gone through several editions, thereby showing their acceptance be chemistry teachers. Although the textbooks were originally written in English and their authors are mainly on the shelves of the libraries of many chemistry colleges in countries where English is not the first language. They are (or were) usually recommended to first-year university chemistry students, and most of them have been translated into several languages. Also,