Physical Science 20 - Feb 4

Today students learned how to name compounds that had multiple cationic charges.  This involved using the Stock System and roman numerals.  We also learned the classical system and how it differs form the Stock System.  We will be using the stock system moving forward.  After this, students learned how to create formulas and name compounds that involved polyatomic ions.  These are groups of atoms that are bonded together that have an overall ionic charge.  Forming compounds with the polyatomic ions is no different than before - we still want to balance our charges and have no overall ionic charge.  The notes we took today were from slides 43-60.  Students spent the remainder of the class working on Assignments C3 and C4.  We will go over these tomorrow at then look at how to name hydrated compounds and acids.