| A | B |
|---|
| Physical Change | A change to a substance that occurs without a change in chemical composition of the substance |
| Chemical Change | a change in which a substance becomes another substance having different or new properties |
| Chemical Reaction | the process by which a chemical change occurs, usually involves two or more substances |
| Reactant | the substances that are interacting at the beginning of a chemical reaction *stuff on the left hand side of the equation |
| Products | new substances that are produced by the conclusion of a chemical reaction *stuff on the right hand side of the equation |
| Synthesis | Two or more elements or compounds react (come together) to create a single new product *A+B AB |
| Decomposition | A single compound breaks down to create two or more compounds or elements *AB A+B |
| Combustion | a chemical reaction that occurs between a fuel and something that burns that produces energy, usually in the form of heat and light |
| Displacement | A chemical reaction in which an atom, or molecule replaces another in a compound *elements in a compound switch partners *AB + CD AD + BC |
| Concentration | The amount of a specified substance in a unit amount of another substance |
| Catalyst | A catalyst is a substance that speeds up a chemical reaction, but is not consumed by the reaction |
| Precipitate | Precipitate is the creation of a solid from a solution. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. |
| Rate of Reaction | The rate of a reaction is the speed at which a chemical reaction happens. |
| Exothermic Reaction | a process or chemical reaction characterized by the release of heat. |
| Endothermic Reaction | a process or chemical reaction characterized by the absorption of heat. |
