| A | B |
|---|
| Bond Energy | This is the energy required to break a chemical bond and form neutral isolated atoms. |
| Catalysts | Chemical agents that selectively speed up chemical reactions without being consumed by the reaction. |
| Chemical Changes | Any change that results in new substances; Examples: Combustion - burning, oxidation - rusting, decomposition - rotting, etc. |
| Chemical Reaction | A change in which one or more substances are converted into new substances. |
| Coefficients | These are the numbers that represent the number of units of each substance taking part in a reaction; they are used to balance chemical equations. |
| Combustion | A type of chemical reaction in which a fuel combines with oxygen to produce heat, light, carbon dioxide, and water. |
| Concentration | The number of particles that are present in a certain volume. |
| Decomposition | A chemical reaction that breaks down compounds into simpler products. |
| Endothermic Reaction | This is a reaction in which energy is absorbed. |
| Evidence of Chemical Change | This includes color change, the formation of a precipitate, formation of gas, and temperature change. |
| Exothermic Reaction | This is a chemical reaction in which heat is released to the surroundings. |
| Law of Conservation of Mass | The law that states that atoms are neither created nor destroyed during a chemical reaction; the mass of the reactants will equal the mass of the products. |
| Physical
Changes | Any change that does not alter the chemical composition of a substance. |
| Precipitate | A solid that forms from a solution during a chemical reaction. |
| Products | The elements or compounds produced by a chemical reaction. |
| Reactants | A starting material in a chemical reaction. |
| Respiration | Conversion of energy stored in glucose molecules into energy the cells can use. |
| Synthesis | Combining of small molecules or substances into larger, more complex ones. |
