WATER PLANT OPERATOR TRAINING PROGRAM

Element Chemical Symbol Atomic Weight Atomic Number Valence Number Corresponding Equivalent Weight Aluminum Al 26.98 13 3 8.99 Calcium Ca 40.08 20 2 20.04 Carbon C 12.01 6 2 4 6 3 Chlorine Cl 35.45 17 1 3 5 7 35.45 11.82 7.09 5.06 Copper Cu 63.54 29 1 2 63.54 31.77 Fluorine F 19.00 9 1 19.00 Hydrogen H 1.008 1 1 1.008 Iron Fe 55.85 26 2 3 27.93 18.62 Magnesium Mg 24.31 12 2 12.16 Manganese Mn 54.99 25 2 3 4 6 7 27.49 18.33 13.75 9.17 7.86 Nitrogen N 14.01 7 3 5 4.67 2.80 Oxygen O 16.00 8 2 8.00 Phosphorus P 30.98 15 3 5 10.33 6.20 Potassium K 39.10 19 1 39.10 Silicon Si 28.09 14 4 7.02 Sodium Na 22.99 11 1 22.99 Sulfur S 32.06 16 2 4 6 16.03 8.02 5.34 Common Chemical Elements Symbol Element Ca calcium Cl chlorine S sulphur N nitrogen C carbon O oxygen H hydrogen Common Chemical Compounds Symbol Compound H2 hydrogen sulphide H2 water S sulphur Al2(SO4)3.14H2O alum Cl2 chlorine gas FeCl3 ferric chloride NaOCl sodium hypochlorite CH4 methane Common Acids and Bases Acids   H2SO4 Sulphuric HCl hydrochloric HNO3 nitric HOCl hypochlorous What do they have in common? Periodic Table of Elements