BSC 2010C Lecture Notes - Lecture 3: Hydrogen Bond, Calcification, Acid Rain
Document Summary
Properties of water (cid:0) water molecules are polar and hydrogen bond to each other. This bonding is responsible for the special properties of water. Cohesion = water molecules stick together as a result of the partial charge attractions between the hydrogen and oxygen. This is one reason plants can transport water against gravity. Adhesion = clinging of one substance to another. In plants the water molecules cling to the sides of the vessels helping transport against gravity. This is also seen in glass graduated cylinders in the lab ex meniscus. Surface tension = level of difficulty involved in breaking or stretching the surface of a liquid. High heat of vaporization = it takes a great amount of energy to convert water from liquid to gas. Hydrophobic = repelled by water; mostly non polar substances. Hydrophilic = water loving or attracted to water. Most of these compounds are polar or charged.
