BIOL 1117 Lecture Notes - Dehydration Reaction, Heat Capacity, Surface Tension
7 Feb 2014
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L4 -the chemistry of life: water and mixtures. Water is called the universal solvent: hydrophilic: substances that dissolve in water, hydrophobic: substances that do not dissolve in water. Ionic bonds are broken by the energy released from the formation of hydration spheres: adhesion and cohesion. Adhesion: tendency of one substance to stick to another. Water adheres to other substances such as tissues in body and. Water ionizes other chemicals (acids and salts) Water is involved in hydrolysis and dehydration synthesis reactions: hydrolysis: the splitting of a water molecule as a chemical breaks up a macromolecule, dehydration synthesis reaction: the forming of a water molecule as a macromolecule is created. Solute particles will pass through most selectively permeable membranes. When the solution stands, the solutes do no separate from the solvent: a colloid is a mixture of larger particles in a solvent, such as albumin in blood plasma.
