ANAT 101 Chapter Notes - Chapter 2: Covalent Bond, Monosaccharide, Chemical Bond
26 Sep 2016
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Document Summary
Molecules have a few atoms and cannot be used to perform complicated functions. Forms solutions, enables dissolved reactants to form products, dissolves waste. Polar molecule: the polar covalent bonds in which electrons are shared unequally make positive and negative regions. The polar bonds and bent shape make it a good solvent, gives it cohesion and allows it to resist temp changes. Solutes that have polar covalent bonds and dissolve easily. Break apart molecules into smaller ones by adding water. Two smaller molecules join to form larger molecules. Water can absorb or release heat with a change in temperature. Water has a high heat capacity due to a lot of hydrogen bonds: water absorbs heat energy and some energy is used to break the h bonds, leaving less energy to increase the waters temp. Has high heat of vaporization: as it evaporated from the skin, it removes heat to be a cooling mechanism.
