Cohesion
Molecules stick together
Adhesion
Molecules stick to other substances
Surface Tension
Cohesion on the surface
Water is a good solvent
Because of its polarity, its O regions attract positive ions (cations) and its H region attaracts negative (anions). Also a universal solvent.
Independent Variable
Variable we manipulate
Dependent
Variable we measure after being changed by the independent variable
Control
Factor that remains the same
Soap
Breaks cohesion and surface tension of water
Oil
Non-polar, accumulates in water
Carbon
Can form with 4 other elements, can form single double or triple bonds, can bond with itself, forms backbones for proteins, dna, lipids, and hormones