click below
click below
Normal Size Small Size show me how
Science Ch. 6 Terms
| Question | Answer |
|---|---|
| mole | the SI base unit used to measure the amount of a substance whose number of particles is the same as the number of atoms of carbon in 12 g of carbon-12 |
| Avogadro's constant | the number of particles in 1 mol |
| molar mass | the mass in grams of 1 mol of a substance |
| conversion factor | a ratio that is derived from the equality of two different units and that can be used to convert from one unit to the other |
| reactant | a substance or molecule that participates in a chemical reaction |
| product | a substance that forms in a chemical reaction |
| chemical energy | the energy released when a chemical compound reacts to produce new compounds |
| exothermic reaction | a chemical reaction in which heat is released to the surroundings |
| endothermic reaction | a chemical reaction that requires heat |
| synthesis reaction | a reaction in which substances combine to form a new compound |
| decomposition reaction | a reaction in which a single compound breaks down to form two or more simpler substances |
| electrolysis | the process in which an electric current is used to produce a chemical reaction, such as the decomposition of water |
| combustion reaction | the oxidation reaction of an organic compound, in which heat is released |
| single-displacement reaction | a reaction in which one element or radical takes the place of another element or radical in a compound |
| double-displacement reaction | a reaction in which a gas, a solid precipitate, or a molecular compound forms from the apparent exchange of atoms or ions between two compounds |
| oxidation-reduction reaction | any chemical change in which one species is oxidized (loses electrons) and another species is reduced (gains electrons); also called redox reaction |
| radical | an organic group that has one or more electrons available for bonding |
| chemical equation | a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products |
| mole ratio | the relative number of moles of the substances required to produce a given amount of product in a chemical reaction |
| catalyst | a substance that changes the rate of a chemical reaction without being consumed or changed significantly |
| enzyme | a type of protein that speeds up metabolic reactions in plants and animals without being permanently changed or destroyed |
| substrate | the reactant in reactions catalyzed by enzymes |
| chemical equilibrium | a state of balance in which the rate of a forward reaction equals the rate of the reverse reaction and the concentrations of products and reactants remain unchanged |