Biology 1406 Chapter 3: Properties of Water

What allows H2O to be reactive

Charge

Properties of Water

1. Cohesion

2. Ability to moderate temperature

3. Expansion upon freezing

4. Universal Solvent

Cohesion

Water molecules to other water molecules

Adhesion

Attraction of water with a different substance

Surface Tension

amount of force necessary to break surface of water

Kinetic Energy

Energy of Motion

Heat

Total amount of Kinetic Energy due to molecular motion

Temperature

Intensity of heat due to kinetic energy of molecules

Specific Heat

Amount of heat that must be absorb/lost for 1 gram of "x" to change by 1 Celcius

H2O's specific heat can be traced due to

Hydrogen Bonds

Calorie

Measure Heat Energy

1 gram for 1 degree Celsius

Kilocalorie

Measure Heat Energy

1000 gram for 1 degree Celsius

Heat Vaporation

Quantity of heat that Liquid must absorb to be converted to a gas

Evaporate Cooling

Liquid Evaporates, the surface of the liquid remains behind is cool (sweating)

Acid precipitation

Precipitation with pH below 5.6

Buffers

Substances that minimizes changes in concentration of pH