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BIO 120 Chapter 3

Flash Cards

Four Emergent Properties of Water- cohesion/adhesion, moderation of temperature, evaporative cooling, excellent solvent
Cohesion/Adhesion- water molecules stick together, which “holds water together” and gives water surface tension
Moderation of Temperature- water resists change in temperature
Specific heat- the amount of heat energy (gained or lost) required to change 1 g of a substance by 1 degree Celsius
Q. Why does water have a high specific heat- A. it is a polar molecule and it forms hydrogen bonds
Evaporative Cooling- reduction in the temperature of water resulting from evaporation of liquid
Solvent- many substances have an affinity for water, they can partially or fully dissolve in it
Water dissociates- water falls apart at low rates
Acid- substances that increase the proton concentration
Base- substances that decrease the proton concentration
Hydrophobic- repels water
Hydrophilic- has an affinity for water
7 on pH scale- neutral
Less than 7 on pH scale- acid
Greater than 7 on pH scale- base
Buffers- minimize change in pH, proton concentration, and electron concentration
Created by: mr_spangler