Writing Chemical Equations

Writing Word Equations Using your naming rules you can write chemical equations using the names of compounds. Example: NaCl + CaO  CaCl2 + Na2 O Sodium chloride + calcium oxide  calcium chloride + sodium oxide

More Examples H2O2  H2 + O2 dihydrogen dioxide  hydrogen + oxygen Mg + AlCl3  Al + MgCl2 magnesium + aluminum chloride  aluminum + magnesium chloride

HOBrFINCl Are elements that when you write them by themselves get a subscript of 2. They are the ONLY ones that get subscripts – all others are just 1. H2 O2 Br2 F2 I2 N2 Cl2

Let’s go the other way: Word to Chemical When you are giving a word equation you must use your naming rules to come up with the chemical equations. Sodium + water  hydrogen and sodium oxide Na + H2O  H2 + Na2O Nitrogen + oxygen  dinitrogen trioxide N2 + O2  N2O3

Today’s tasks Equations Worksheet