"I am a very experienced Chemist having worked for over 30 years in research, industry and Government regulatory agencies. Chemistry is a science and in science, the key to understanding is getting to learn certain basic principles governing that branch of science.

Memory, although very important, is not enough on its own. These basic principles are not uniform for all chemists but will be unique to individual teachers. Two equally qualified Chemists may be very different when rated as chemistry teachers on a scale of 1-5, with one scoring a 2 while the other scores a 5. The students will very easily tell the difference!"