EARTHSC 2WW3 Final: Water Exam Review for h2o.docx
6 May 2014
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Document Summary
It is a compound that consists of two hydrogen atoms covalently bonded to one oxygen. In general, covalent bonds are 10-50 times stronger than hydrogen bonds. Furthermore, water can form hydrogen bonds that facilitate movement of water through systems. This property also allows water to act as a very good solvent. The physical properties of water include: density. Ice remains at the top of a lake during winter: expansion. Water expands when it cools: specific heat. The amount of energy it takes to raise 1 kg of water by 1 degree: phase change. Energy is required to change liquid to a gas: greenhouse gas. Invisible water vapour reflects reflecting solar radiation such that it remains. This results in warming of the earth: surface tension. Water is more attracted to itself than other water molecules. This in a spherical shape if there was no gravitational force because there is a stronger interaction inside: detergent will reduce surface tension between water molecules.
