| A | B |
| Acid | Substance that increases th H+ion concentration of a solution |
| Atom | smallest substance of an element |
| Base | Substances that decreases the H+ ion concentration of a solution |
| Buffer | maintains the constancy of pH |
| Carbohydrate | Organic compound that contains carbon, hydrogen and oxygen |
| Covalent bonds | Chemical bond formed when atoms share electrons |
| Electrolyte | Substance that dissociates in solution to form ions |
| Element | Substance taht cannot be broken down into two or more diff. substances |
| Enzymes | Largest group of proteins |
| Ion | Atom that has become electrically chared by the loss or gain of electrons |
| Ionic bond | Chemical bond formed when an atom donates an electron to another atom |
| Lipid | Fat and fatty-like compounds |
| Nucleic acid | Polymer of nucleotides that make up DNA and RNA |
| Protein | Organic compound composed of amino acids |
| Hydorgen bonds | form by an unequal charge distribution of a molecule |