This is a 2-page reference sheet that I have developed for my Chemistry students. It includes information about the SI system, abbreviations, significant digits, conversion factors, formulas and physical constants. My students call it their "cheat sheet."
As it is compacted to fit on a single sheet of paper, it will only format correctly in MS Word (v 4 or later), with "Times" and "symbol" fonts.
Please let me know of any errors. It is made specifically to match terminology in the Merrill Chemsitry test.