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Chemical Reactions
Chapter 14
Word | Definition |
---|---|
chemical reaction | a process by which one or more substances change to produce one or more different substances |
precipitate | a solid that is produced as a result of a chemical reaction in a solution |
chemical formula | a combination of chemical symbols and numbers to represent a new substance |
chemical equation | representation of a chemical reaction that uses symbols to show the difference between the reactants and the products |
reactant | substance or molecule that participates in a chemical reaction |
product | substance that forms in a chemical reaction |
law of conservation of mass | a law that states mass cannot be created or destroyed in ordinary chemical and physical changes |
synthesis reaction | reaction in which two or more symbols combine to form a new compound |
decomposition reaction | reaction in which two or more substances combine to form a new compound |
decomposition reaction | reaction in which a single compound breaks down to form two or more simpler substances |
single displacement reaction | reaction in which one element or radical takes the place of another element or radical in a compound |
double displacement reaction | reaction in which a gas, solid, precipitate, or molecular compound forms from the exchange of ions between two compounds |
exothermic reaction | chemical reaction in which heat is released to the surroundings |
endothermic reaction | chemical reaction that requires heat |
law of conservation of energy | a law that states that energy cannot be created nor destoryed but can be changed from one form to another |
activation energy | minimum amount of energy required to start a chemical reaction |