| A | B |
|---|
| Activation Energy | Amount of energy needed to break the bonds in the reactants to form the products. |
| Catalyst | A substance that affects the rate of a chemical reaction without being used up in the reaction. |
| Chemical Bond | The force that holds atoms or ions together as a unit. |
| Chemical Change | Process by which a substance becomes a new and different substance. |
| Chemical Energy | The energy stored in chemical bonds. |
| Chemical Reaction | Occurs when a substance undergoes chemical changes to form a new substance. |
| Combustion Reaction | A chemical reaction in which a substance reacts rapidly with oxygen, often producing heat and light. |
| Concentration | The amount of substance dissolved in a certain amount of liquid. |
| Decomposition Reaction | A chemical reaction which a compound breads down into two or more simpler substances. AB---> A + B |
| Double-Replacement Reaction | A chemical reaction in which two compounds exchange positive ions (metals) and form two new compounds. AB + CD ---> AD + CB |
| Endothermic Reaction | A chemical reaction that absorbs energy from its surroundings. The container will feel cool to the touch. |
| Exothermic Reaction | A chemical reaction that releases energy to its surroundings. The container will feel warm to the touch. |
| Law of Conservation of Mass | Mass cannot be created nor destroyed in a chemical reaction. |
| Molar Mass | The mass of one mole of a substance. |
| Mole | An amount of a substance that contains approximately 6.02 x 10^24 particles of that substance. |
| Oxidation-Reduction Reaction | A chemical reaction in which electrons are transferred from one reactant to another. |
| Products | New substances formed as a result of a chemical reaction. |
| Reactants | A substance that undergoes a change in a chemical reaction. |
| Reaction Rate | The rate at which a reactant changes into products over time. |
| Single-Replacement Reaction | A chemical reaction in which one element takes the place of another element in a compound. AB + C ---> CB + A |
| Surface Area | The outside part or outermost layer of something. |
| Synthesis Reaction | A chemical reaction in which two or more substances react to form a single substance. A + B ---> AB |
