| Term | Definition |
|---|
| synthesis reaction | a chmical reaction in whichtwo or more simple substances combinbe to form a new, more complex substance |
| decompostion reaction | a chemical reaction that breaks down compounds into simpler products |
| precipitate | a solid that forms from a solution during a chemical reaction |
| endothermic reaction | a reaction that absorbs erergy in the form of heat |
| exothermic reaction | a reaction that releases energy in the form of heat |
| polyatomic ion | an ion that is made of more than one atom |
| subscript | a number in a chemical formula that tells the number of atoms in a molecule or the ratio of elements in a compound |
| coefficient | a number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction |
| catalyst | a materical that increases the rate of a reaction by lowering the activation energy. |
| activation energy | the minimum amount of energy needed to get a chemical reaction started. |
| chemical energy | energy that bonds atoms or ions together and can be released from a substance when it reacts |
| single replacement reaction | a free elemnt replaces a differnt element of a compound . |
| double replacement reaction | reaction takes place between two compounds. a part of one compound changes places with a part of another compound. |
| combustion reaction | a compound and oxygen burn. |
Combine with other sets
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