Assignment for Bio 8/29/2011

Today in class we discussed 3 types of bonds: covalent, ionic, hydrogen bonding. The purpose of bonding is to create stability. Covalent bonding (polar is partial sharing and non polar in sharing of equal electrons). These bonds are strong and the more bonds the better. Hydrogen bonding is weak bond and example of that is water. The bonds are easily broken however Hydrogen bonding gives water a very unique property (partially negative toward Oxygen and partially positive towards Hydrogen). Ionic is when atoms actually lose electrons (sort of) forming a positive ion (atom) and negative ion (atom).
Secondly we discussed the properties of water: Such as density, specific heat, vaportization, good solvent, cohesion and adhension. Todays lab which we will be continuing on Wednesday will incorporate us solving for density of different liquids.