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chemical reactions
| Question | Answer |
|---|---|
| Activation energy | what is needed to start a chemical reaction |
| arrow | you read the arrow as yields in a chemical equation or formula |
| characteristics of a chemical reaction | changes in energy or changes in properties |
| chemical changes | alter the chemical properties of matter |
| coefficiant | a number placed in front of a chemical formula in an equation |
| conservation of mass | the amount of matter invlolved in a chemical reaction does not change |
| decomposition reaction | a compound breaks down in simpler substances |
| endothermic reaction | an observable change in energy that shows a chemical reaction took place |
| exothermic reaction | an observable change in energy that show a chemical reaction took place |
| physical changes | alter only the physical properties of matter |
| precipitate | a solid that forms from a solution during a chemical reaction |
| products | the materials you have after a chemical reaction |
| reactants | the materials you have at the beginning of a chemical reaction |
| replacement reaction | one part of a compound is displaced by an element or compound from another substance. |
| states of matter | solid liquid gas |
| subscripts | show the number of an element in a molecule or the ratio of elements in a compound |
| synthesis reaction | 2 substances combine to form a new compound |
Created by:
150011892