Welcome to Mr. Sippel's Home Page Mr. Sippel Science Department phone:  (708) 799-3000 ext.5638 email:   tsippel@hfhighschool.org  Welcome to my homepage.  You can take a look at my course syllabus and policies. Chemistry (CP) Course Syllabus Chemistry (CP) Course Policies Chemistry (H) Course Syllabus Chemistry (H) Course Policies