| A | B |
|---|
| CHEMICAL REACTION | the process in which one or more substances change to make one or more new substances. |
| PRECIPITATE | a solid formed in a solution. |
| SOME SIGNS OF CHEMICAL REACTIONS | CHANGE IN COLOR, ENERGY, GAS GIVEN OFF, SOLID FORMED ALWAYS RESULTING IN A NEW SUBSTANCE |
| CHEMICAL BOND | a force that holds atoms together. There are three: Ionic, Covalent, and Metallic |
| CHEMICAL FORMULA | a shorthand way to use chemical symbols and numbers to represent a substance |
| SUBSCRIPT | a number written below and to the right of a chemical symbol in a formula |
| CHEMICAL EQUATION | uses chemical symbols and formulas as a shortcut to describe a chemical reaction. |
| REACTANTS | the starting materials of a chemical equation, usually on the left side of an equation. |
| PRODUCTS | the substances formed by a chemical reaction. These are usually on the right of an equation. The "yields" arrow points to the product. |
| LAW OF CONSERVATION OF MASS | Matter is not created nor destroyed in chemical reactions. It is only rearranged. |
| COEFFICIENT | the number placed in front of a chemical symbol or formula. |
| SYNTHESIS REACTION | a reaction in which two or more substances combine to form ONE new compound. |
| DECOMPOSITION REACTION | a reaction in which a single compound breaks down to form two or more simpler substances. |
| SINGLE DISPLACEMENT REACTION | occurs when an element replaces another element that is part of a compound |
| DOUBLE DISPLACEMENT REACTION | a reaction in which IONS from two compounds exchange places. |
| EXOTHERMIC REACTION | a chemical reaction in which energy is released. Energy is listed as part of the product. |
| ENDOTHERMIC REACTION | a chemical reaction in which energy is taken in. "Energy" is listed as part of the reactant |
| LAW OF CONSERVATION OF ENERGY | energy is not created or destroyed by a chemical reaction but can change forms. |
| ACTIVATION ENERGY | the SMALLEST amount of energy that molecules need in order to react. Two sources of activation are friction, a spark, light |
| INHIBITOR | a substance that slows down or stops a chemical reaction |
| catalyst | a substances that speeds up a reaction without being permanently changed |
