BIOL 1001 Chapter : Biology Chapter 3
Document Summary
A. cohesion: tendency to stick together: surface tension: surface resists breaking, adhesion: sticks to polar surfaces. Biology - 9/6: water molecules tend to stick together, water-based solutions can be acidic, basic, or neutral. Dissociation: a few water molecules naturally break down into oh- or h+ Water (h2o) = hydroxide ion (oh-) + (h+: hydroxide ion is negative and basic, hydrogen ion is positive and acidic. The lower the ph the higher the acid/ higher the ph the higher the base. Lower the ph the higher the number of protons and vice versa: water moderates temperature, water heats and cools slowly. Must break h-bonds/must form h-bonds: water is an effective coolant. Removes heat by evaporation: water is an unusual solid. Ice: water is less dense when frozen. h2o solid state: h-bonds become rigid=further apart. Carbon is a useful atom in light because it can form different types of bonds with different types of atoms.
