double replacement

It is my humble opinion, based on 36 years of teaching high school chemistry, that 11 Chemistry must start with a look at Chemical Reactions, for the simple reason that this begins the student’s formal study of chemistry with an empirical focus.

Discussing chemical reactions with my students has always been one of my favorite topics because the students got to see the chemistry on a bulk scale. The chemistry on paper comes to life in the lab. The unique teaching situation that we find ourselves in forces chemistry educators to adapt and evolve.

You don't have to be a Modeler (i.e., a teacher who practices Modeling Instruction) to appreciate the utility of particle diagrams. Many chemistry teachers use models and diagrams to help students describe how matter behaves at the particle level.

You don't have to be a Modeler (i.e., a teacher who practices Modeling Instruction) to appreciate the utility of particle diagrams. Many chemistry teachers use models and diagrams to help students describe how matter behaves at the particle level.