| A | B |
|---|
| chemical reaction 632 | process in which one or more substances are changed into new substances |
| reactant 632 | in a chemical reaction, the substance that reacts. Reactants are written to the left of the arrow in a chemical equation. |
| product 632 | in a chemical reaction, the new substance that is formed. Products are written to the right of the arrow in a chemical equation. |
| chemical equation 635 | shorthand method to describe chemical reactions using chemical formulas and other symbols. |
| coefficient 636 | number in a chemical equation that represents the number of units of each substance taking part in a chemical reaction. |
| balanced chemical equation 638 | a chemical equation with the same number of atoms of each element on both sides of the equation. Balanced equations show that mass is conserved in a chemical reaction. |
| combustion reaction 641 | a type of chemical reaction that occurs when a substance reacts with oxygen to produce energy in the form of heat and light. |
| synthesis reaction 642 | chemical reaction in which two or more substances combine to form a different substance. |
| decomposition reaction 642 | chemical reaction in which one substance breaks down into two or more substances. |
| single-displacement reaction 643 | chemical reaction in which one element replaces another element in a compound. |
| double-displacement reaction 643 | chemical reaction that produces a precipitate, water, or a gas when two ionic compounds in solution are combined. |
| precipitate 643 | insoluble compound that comes out of solution during a double-displacement reaction. |
| oxidation 645 | the loss of electrons from the atoms of a substance |
| reduction 645 | the gain of electrons by the atoms of a substance |
| exergonic reaction 648 | chemical reaction that releases some form of energy, such as light or heat. |
| exothermic reaction 648 | chemical reaction in which energy is primarily given off in the form of heat. |
| endergonic reaction 649 | chemical reaction that requires energy input (heat, light, or electricity) in order to proceed. |
| endothermic reaction 649 | chemical reaction that requires heat energy in order to proceed. |
| catalyst 650 | substance that speeds up a chemical reaction without being permanently changed itself. |
| inhibitor 650 | substance that slows down a chemical reaction or prevents it from occurring by combining with a reactant. |
