This textbook has been created for the foreign students who intend to study general medicine or dentistry at Medical Faculty of Masaryk University. It is a brief review of the required knowledge o chemistry to guide students in the preparation to the entrance teasts. We know that chemistry is not easy for students, an moreover, high school chemistry has different concepts in different countries all over the world. The last chapter shows typical questions of entrance test, togeher with correct answers. The authors hope that „Overview of Chemistry“ will be useful for all applicants who are ready to go to Brno