Today in the Republic of Kazakhstan there is a demand for teaching staff of the natural direction with the command of three languages. This is due to the need to form both the subject and language skills of students. To improve language proficiency integrated with the subject in teaching, an effective method is a CLIL technology recognized in the world education arena. The article presents the results of a study using CLIL technology in teaching “Physical Chemistry”. Practical classes were conducted offline via using interactive teaching methods at the Khoja Akhmet Yassawi International Kazakh-Turkish University. In the pedagogical experiment, the 3^rd year group students of the educational program B012 Chemistry teacher training were selected. During the study, a survey was conducted using the Google Forms platform. As a result, the ways of effective application of CLIL methods in teaching chemistry in English were considered. On the linguistic aspect, terminology, and glossary in three languages were applied. At the end of the experiment, a control survey was also conducted. During this, the goal was achieved – to improve students’ communication skills, improve vocabulary and increase motivation in learning both the subject and the English language. The pedagogical experiment results showed the success of teaching chemistry in English using CLIL technology.