MEA 200 Lecture Notes - Lecture 6: Heat Capacity, Solution, Boiling Points
30 Mar 2017
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Document Summary
Strong covalent bonds between one hydrogen (h) and two oxygen (o) atoms. Both h atoms on the same side of the o atom. Bent molecule shape gives water its unique properties. Polarity means negative charge at oxygen end and positive charge at hydrogen end. Attraction between positive and negative ends of water molecules to each other or other ions. High solubility of chemical compounds in water. Cohesion - refers to the attraction of molecules to other molecules of the same kind. Water molecules stick to other polar molecules. Water can dissolve almost anything universal solvent. Water is solid, liquid, and gas at earth"s surface. Heat - transfer of both kinetic and potential energy from one object to another due to temperature differences. Calorie is the amount of heat needed to raise the temperature of 1 gram of water by 1 c. Temperature is a measurement of average kinetic energy. Boiling point = condensation point: 100 c (212 f)
