BIOL 110 Lecture Notes - Lecture 4: Emergence, Surface Tension, Plant Cell
8 Sep 2016
Department
Course
Professor
Document Summary
The polarity of water molecules results in hydrogen bonding. Polarity allows water molecules to form hydrogen bonds with each other. The water molecule is a polar molecule: the opposite ends have opposite charges. Four emergent properties of water contribute to earth"s fitness for life. Four of water"s properties that facilitate an environment for life are: Collectively, hydrogen bonds hold water molecules together, a phenomenon called cohesion. Adhesion- is an attraction between different substances, for example, between water and plant cell walls. Surface tension- is a measure of how hard it is to break the surface of a liquid. Water absorbs heat from warmer air and releases stored heat to cooler air. The specific heat- the amount of heat that must be absorbed or lost for. 1g of that substance to change its temperature by 1-degree c. Water"s high specific heat can be traced to hydrogen bonding: As a liquid evaporates, its remaining surface cools, a process called.
