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chem vocab ch.3

chemistry vocabulary chapter 3

termdefinition
material used when referring to a specific kind of matter
mixture matter that contains two or more different materials
phase any region with a uniform set of properties
heterogenous mixture mixture that is composed of more than one phase
interfaces definite boundries that separate the different phases in a heterogenous mixture
homogenous materials that consist of only one phase
solution homogenous matter that is composed of more than one material
solute dissolved material in a solution
solvent dissolving material in a solution
substances materials that are homogenous and always have the same composition
elements substances that are composed of only one kind of atom
compounds substances composed of more than one kind of atom
organic substances compounds taht contain the element carbon
inorganic substances elements and the compounds of all elements other than carbon
physical change when the same substanec remains after the change
chemical change when a new substance forms from after a change
precipitate when a solid substance forms from a solution
physical property description of the behavior of a substance udergoing a physical change
chemical property describes the behavior of a substance undering a chemical change
extensive properties depend on the amount of matter present
intensive properties do not depend on the amount of matter present
system piece of the universe under consideration
heat energy transferred as a result of temperature difference
joule derived SI unit rather than a base unit
endothermic reaction when energy is absorbed
exothermic reaction when energy is given off by a reaction
activation energy minimum amount of energy for endothermic and exothermic reactions to start
calorimeter device used to measure the energy given off or absorbed during chemical or physcial changes
specific heat heat needed to raise the temperature of one gram of a substance by one celsius degree
Created by: mariapanti
 

 



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