| A | B |
| adenosine triphosphate ATP | a molecule present in living cells and acting as an energy source for metabolic reactions |
| adhesion | the attractive force between unlike substances |
| alcohol | a functional group attached to a carbon compound with the chemical formulat -OH |
| capillarity | the reaction of a liquid surface with a solid; capillarity allows water to creep up the interior of a narrow vessel |
| condensation reaction | a chemical reaction, also called dehydration synthesis, in which one molecule of water is produced |
| functional group | a structural building block that determines the characteristics of a chemical compound |
| hydrogen bond | a weak chemical bond between the hydrogen atom in one molecule and a negatively charged region of another molecule |
| hydrolysis reaction | the splitting of a molecule through reaction with water |
| macromolecule | a very large organic molecule composed of many smaller molecules |
| monomer | a repeated, single molecule unit in a polymer |
| organic compound | a compound that is derived from living things and contains carbon |
| cohesion | the attraction of like molecules to each other; water sticking to itself |
| polar compound | a comound with one side having a negative charge and the other side a positive charge |
| polymer | a compound consisting of repeated linked monomers |