| A | B |
|---|
| reactants | the starting substances in a chemical reaction |
| products | The new substances that are formed in a chemical reaction |
| chemical reaction | A summary of a chemical change |
| subscript | a lowered number that tells how many atoms are present |
| coefficient | A number written in front of a chemical symbol or formula that tells how many atoms or molecules are present |
| sythesis reaction | a reaction in which two or more substances combine to form a single compound. General form is : A + B ---> AB |
| single displacement reaction | a reaction that takes place when one element repaces another element in a compound: General form is : A + BX ---> B + AX |
| decomposition reaction | a reaction in which a compound breaks down into two or more substances. General form is AB ---> A + B |
| double displacement reaction | a reaction in which the compounds in a reaction exchange ions. General form is: AX + BY --> AY + BX |
| endothermic | a reaction that takes in or absorbs energy |
| exothermic | a reaction that releases energy |
| catalysts | a substance that speeds up a chemical reaction |
| inhibitor | a substance that slows down a chemical reaction |
