LIFE 102 Lecture Notes - Lecture 4: Plant Cell, Surface Tension, Evaporation
Document Summary
*polarity allows water molecules to form hydrogen bonds with each other. Water molecules being held together by hydrogen bonds. A measure of how hard it is to break the surface of a liquid. The amount of heat that must be absorbed or lost for 1g of the substance to change its temperature by 1 degree celsius. Minimizes temperature fluctuations to within limits that permit life. Transformation of a substance from liquid to gas. The heat a liquid must absorb for 1g to be converted to gas. As a liquid evaporates, its remaining surface cools. Helps stabilize temperatures in organisms and bodies of water. *ice floats in liquid water because hydrogen bonds in ice are more ordered making ice less dense than water. Water reaches its greatest density at 4 degrees celsius. A liquid that is a completely homogeneous mixture of substances.
