Atomic structure introduction - High School Chemistry - covers elements, compounds and formulae

This is is an introductory lesson on atomic structure for High School Chemistry that begins with a fun film characters elements starter. There is then a discussion on how elements are made in supernovae. Students then consider rules for naming compounds and how to write formulae. They then then write the formulae for 12 substances. The challenge is to write empirical formulae. The lesson concludes with a consideration of how some of the chemicals are harmful to fish such as Nemo. Titanium dioxide in suntan cream causes water and oxygen in seawater to react to form hydrogen peroxide that is toixc to fish. Answers are included.