| A | B |
|---|
| element | any substance that cannoot be broken down into simpler substances |
| compound | the chemical combination of two or more elements |
| atom | the smallest unit of an element |
| molecule | the smallest unit of most compounds |
| organic compounds | most compounds that contain carbon and have to do with living things |
| inorganic compounds | compounds that do not contain carbon |
| the periodic table | a table which organizes all of the elements that have been discovered so far |
| proteins | very large organic molecules produced by the ribosomes |
| amino acids | small molecuels that make up proteins |
| enzyme | type of protein that speeds up chemical reactions in living things |
| nucleic acids | organic molecules that contain the instructions needed to carry out all the functions of life |
| DNA | nucleic acid that passes genetic information from parent to offspring |
| RNA | nucleic acid that plays an important role in protein production |
