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Bio 112- chapter 3 lecture notes

Changes the arrangement of 10 less dense than liquid

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Unformatted text preview: of Vaporiza<on: Water vapor Heat Upside: EvaporaPve cooling * as molecules of liquid water are converted to water vapor evaporation Liquid the surface of the liquid that remains behind cools down. water Downside: Severity of steam burns Water vapor As steam condenses to liquid on the skin, a huge amount of heat is released to the skin and damages skin cells Heat Liquid water hap://photos.demandstudios.com/ 12/57/fotolia_2619284_XS.jpg hap://i.ehow.com/images/a04/gf/np/treat ­steam ­ burns ­200X200.jpg 3. Water expands upon freezing Ice Liquid Water Krill – Oceans near AntarcPca Crystal Ice: Liquid Water Each molecule of water is bound to 4 Water molecules are closer together -not fixed neighboring water molecules in a fixed structure Hydrogen bonds unstable – will form and reform rapidly. Changes the arrangement of 10% less dense than liquid water at 4 °C molecules from one instant to another * reason ice floats * greatest density at 4C FloaPng ice insulates liquid below Why is...
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