| A | B |
| organic compound | compounds that contain carbon and hydrogen, often combined with a few other elements such as oxygen or nitrogen |
| network solid | a solid in which all the atoms are linked by covalent bonds. |
| hydrocarbon | an organic compound that contains only the elements hydrogen and carbon |
| saturated hydrocarbon | a hydrocarbon in which all all of the bonds are single bonds |
| isomers | organic compounds with the same molecular formula but with different structural formulas |
| unsaturated hydrocarbon | a hydrocarbon that contains one or more double or triple bonds |
| aromatic hydrocarbons | hydrocarbons that contain a ring structure similar to benzene |
| fossil fuels | rich deposits of hydricarbon mixtures that formed from the remains of organisms |
| substituted hydrocarbon | a hydrocarbon in which one or more hydrogen atoms have been replaced or substituted |
| fuctional group | an atom or group of atoms that determines the properties of an organic compound |
| polymer | a large molecule formed wen many smaller molecules are linked together by covalent bonds |
| monomers | a small organic molecule that joins with other monomers to form a polymer |
| carbohydrates | a compound composed of carbon, hydrogen, and oxygen in which the ratio of hydrogen to oxygen atoms is 2:1 |
| nucleic acids | a large, nitrogen-containing polymer, found mainly in the nuclei of cells |
| amino acid | compounds that contain both carboxyl and amino functional groups |
| protein | a long polymer that forms when amino acids bond together |
| photosynthesis | a process in which plants chemically combine carbon dioxide and water into carbohydrates a process requiring light and chlorophyll |
| enzymes | a protein that acts as a catalyst for reactions in cells |
| vitamins | an organic compound that organisms need in small amounts, but cannot produce |