Chemistry as a branch of science that deals with the study of the composition, properties, and reactions of matter is essential for any person aspiring to pursue carrier in science and technology. Understanding the basics of chemistry prepare students to study and excel in medicine, pharmacy, biochemistry, etc. not only that it will make one appreciate the beauty and complexity of nature. In this class, I teach O-level and A-level chemistry with focus on applied examples to excite the love of science, especially in young people.