Welcome to the home page of Francis J. DeHoratius, retired teacher at St. Joseph's Preparatory School, Philadelphia, PA. The purpose of this site is to provide students with information they will need for classroom and laboratory work.The links will provide further information about the course.

Course Expectation

Laboratory Report Format

Class Notes

Homework Assignments

Periodic Table

Ion Table

Graphing Sample

Graphing Homework

Pictures of Will, Matt and Andrew DeHoratius


Safety Glasses
The first thing you put on in the lab and the last things you take off !
email Mr. D.