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Freezing and Melting of Water
Member rating: No Rating | Words: | Submitted: Tue Aug 26 2003
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Freezing and Melting of Water Introduction The water molecule (H2O) is formed by one atom of oxygen, bound to two atoms of hydrogen. The hydrogen atoms are "attached" to one side of the oxygen atom, resulting in a water molecule having a positive charge on the side where the hydrogen atoms are and a negative charge on the other side, where the oxygen atom is. Since opposite electrical charges attract, water molecules tend to attract each other. All these water molecules attracting each other mean they tend to clump together. Earth's water (about 70 percent of the Earth's surface is water-covered) is constantly interacting, changing, and in movement. The freezing temperature (the temperature that a substance turns from a solid to a liquid) is 0o on the Celsius scale, and 100o is water's boiling point (at sea level; 1 atmosphere pressure, 76mm Hg or 101.3 KPa.). Another important...
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