BY 108 Chapter Notes - Chapter 2: Capillary Action, Surface Tension, Heat Capacity
Document Summary
Chemistry of water - no organism can survive/reproduce w/o water. Carries no net charge or unpaired electrons. Can form weak chemical associations w/ a fraction of covalent bonds" strength. Oxygen atom portion has partial negative charge. Hydrogen atoms portion have partial positive charge. Polar molecules - has charge separation and partially charged poles. Hydrogen bonds - very weak bonds that last for a short while between hydrogen atoms. Adhesion - attraction between water molecules and other molecules. Surface tension - causes water to cling together, allowing some insects to walk on it. Capillary action - water rises in very narrow tubes due to adhesion heat storage in water - temperature measures how fast the molecules move. Specific heat - energy needed to change 1 gram of a substance by 1 degree. Heats up more slowly than most compounds, holds heat longer. Heat of vaporization - energy needed to change 1 gram of liquid into gas.
