The 'sticks' holding the hydrogens to the oxygen represent covalent bonds. In this second picture, the hydrogens are shown as white spheres, the oygen as a red sphere. Baum, Macmillan Publishing Company, New York, 1993 IMAGE SOURCE: "Chemistry and Life", 4th Edition, John W. Let's look at a picture of a molecule of water: In this picture the two hydrogens are represented by white spheres and the oxygen by a red sphere. The bonds which hold the hydrogen and oxygen together are called covalent bonds - they are very strong. The formula H 20 tells us that one molecule of water is comprised of 2 atoms of hydrogen and one atom of oxygen bonded together. Its chemical formula, H 20, is probably the most well known of all chemical formulas. Indeed! Water is one of our most plentiful chemicals. H 2O - The Mystery, Art, and Science of Water H2O - The Mystery, Art, and Science of Water: The Chemistry of Water: Structure
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