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Chemical Reactions
CR
| Question | Answer |
|---|---|
| the production of a gas | indicates that a chemical reaction may be occuring |
| a solid appears (the production of a precipitate) | indicates that a chemical reaction may be occuring |
| a change in temperature | indicates that a chemicalreaction may be occuring |
| type of reaction in which heat energy is released to the environment | exothermic reaction |
| type of reaction in which heat is absorbed from the environment | endothermic reaction |
| an insoluble product of a chemical reaction | precipitate |
| the starting material in a chemical reaction | reactants |
| the substances produced by a chemical reaction | product |
| energy stored within a molecule that can be released when the substance reacts | chemical energy |
| what happens when a chemical reaction occurs | atoms are rearranged |
| a reaction of at least two substances that form a new, more complex compound | synthsis reaction |
| a reaction in which one compound reaks into at least two products | decomposition reaction |
| the decomposition of a compound by an electric current | electrolysis |
| a reaction in which a compound and oxygen burn | combustion reaction |
| a reaction in which atoms of one eleent take the place of atoms of another element in a compound | single displacement reaction |
| a reaction in which a gas, a solid precipitate, or water is fromed from the apparent exchange of ions between two compounds | double displacement reaction |
| a reaction that occurs when electrons are transferred from one reactant to another | reduction/oxidation reaction |
| the fragments of molecules that have at least one electron available for bonding | radicals |
| the use of chemical formulas and symbols to show the reactants and products in a chemical reaction | chemical equation |
| what must be true of a chemical equation | must be balanced |
| what a balanced equation shows | conservation of mass |
| matter cannot be created or destroyed in a chemical reaction | law of conservation of matter |
| higher temperature will | speed up a chemical reaction |
| large surface area will | speed up a chemical reaction |
| higher concentration of reactants will | speed up a chemical reaction |
| the use of a catalyst will | speed up a chemical reaction |
| proteins that are catalysts for chemical reactions in living things | enzymes |
| the state in which a chemical reaction and its reverse occur at the same time and at the same rate | equilibrium |
| general synthesis reaction | A + B ----> AB |
| general decomposition reaction | AB ----> A + B |
| general single displacement reaction | A + BC -----> AC + B |
| general double displacement reaction | AB + CD ---> AD + CB |
| synthesis reaction | two substances making one substance |
| decomposition reaction | one substance making two or more substances |
| single displacement reation | an element replaces another element from a compound |
| double displacement reaction | similar elements in two different compounds switch places with each other |
| redox reaction | one reactant loses electron and the other gains electron |
Created by:
johnwhitfield35125
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