Different teachers have their ways of teaching strategies/methods. Some of them try to create a light atmosphere in the classroom to make students more comfortable and free. What is your method of teaching such a subject?
Teaching Chemistry is not an easy task for teachers because it is a more robust subject for the students. To explain such subject one should start by teaching the periodic table, as it is the most crucial part of the subject.
Yes, I also agree with you that if teachers start with the periodic table and do explain chapters with some live examples, then I think it will be more accessible for the students to understand the things even more.