BCH370H1 Lecture 2: basics of Water, pH (Weak acids and Bases), Buffers
7 Jun 2022
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Document Summary
Water"s life-supporting properties: water is a polar molecule. The water molecule is bent, not linear, and so the distribution of charge is asymmetric. The oxygen nucleus draws electrons away from the hydrogen nuclei, which leaves the region around the hydrogen nuclei with a net positive charge. The water molecule is thus an electrically polar structure. Water"s life-supporting properties in hydrogen bonding with each other. polar covalent bond. Structure of a water molecule participating: water is cohesive, water molecules interact strongly with one another through hydrogen bonds, these interactions are apparent in the structure of ice. Water is an excellent solvent for polar molecules. It seems to defy the laws of physics, but a paper clip made of steel can indeed float on the water surface. The high surface tension helps the paper clip - with much higher density - float on the water. Water"s life-supporting properties: the cohesion of water is important in the living world.
