| A | B |
|---|
| HYDROGEN BOND | A weak attraction between a hydrogen atom and another atom |
| IONIC BOND | Chemical bond formed when one or more electrons are transferred from one atom to another. |
| COVALENT BOND | Type of bond between atoms in which the electrons are shared. |
| COHESION | The attraction between molecules of the same substance. |
| ADHESION | The attraction between different kinds of molecules |
| PH SCALE | Measures the concentration of Hydrogen ions in a solution. |
| ACID | A compound that forms hydrogen ions in solution. |
| BASE | A compound that forms hydroxide ions in solution |
| BUFFER | A compound that prevents sharp, sudden changes in PH. |
| MONOMER | A small chemical unit in which larger compounds are built. |
| POLYMER | A large compound made up of many smaller units |
| CARBOHYDRATE | A macromolecule made up of carbon, hydrogen and oxygen atoms. A major source of energy |
| LIPID | A macromolecule made up of carbon and hydrogen. Stores energy |
| PROTEIN | A macromolecule made up of carbon, hydrogen and nitrogen. Needed for growth and repair. |
| NUCLEIC ACID | A macromolecule made up of carbon, hydrogen oxygen, nitrogen and phosphorous |
| CATALYST | A substance that lowers the activation energy and increases the reaction rate in a chemical reaction. |
| ENZYME | A Substance that speeds-up chemical reactions in organisms. |
| PRODUCT | A substance that is formed by a chemical reaction.. |
| REACTANT | A substance that is changed by a chemical reaction. |
| SUBSTRATE | The part of a chemical reaction that enzymes act on. |
| ACTIVATION ENERGY | The energy needed to start a chemical reaction. |
| COMPOUND | A substance made of atoms of different elements that are bonded together in a particular ratio. |
| MOLECULE | Two or more atoms held together by covalent bonds. |
| ELEMENT | A substance made of only one type of atom and can not be broken down by chemical means. |
