| Term | Definition |
| valence electrons | outermost electrons that can form covalent bonds in carbon |
| hydrocarbon | a molecule made of only carbons and hydrogens |
| hydroxyl group | a functional group having a "-OH" attached to a carbon atom |
| carbonyl group | a functional group in which a carbon is bonded to an oxygen by a double covalent bond (C=O) |
| carboxyl group | a functional group composed of COOH; a combo of a hydroxyl and carbonyl group |
| amino group | a functional group having "NH2" |
| hydrophilic | being attracted to water; property of functional groups |
| hydrophobic | having tendency to avoid water; property of hydrocarbons |
| polymer | chemical composed of many similar parts |
| monomer | a single part of a large compound made of repeating similar units |
| dehydration synthesis | a.k.a. condensation; makes larger compounds by removing water molecules to form bonds |
| hydrolysis | breaks a molecule down into smaller parts by adding water to substance to break bonds |
| organic | a substance that must have carbon as one of its atoms |