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Vocab

Chapter 1-2

TermDefinition
Mass an object is a measure of the amount of matter the object contains.
volume an object is measured of the space occupied by the object.
extensive property property that depends on the amount of matter in a sample
intensive property property that depends on the type of matter in a sample, not the amount of matter
Substance matter that has a uniform and definite composition
physical property quality or condition of a substance that can be observed or measured without changing the substance
Solid form of matter that has a definite shape and volume
liquid form of matter that has an indefinite shape, flow, yet has fixed volume
gas form of matter that takes both shape and volume of its container
vapor describes the gas state of a substance that is generally a liquid or solid at room temp
physical change some properties of a material change but the composition of the material does not change
mixture a physical blend of two or more substance that are not chemically combined
heterogeneous mixture a mixture that is not uniform i composition; components are not evenly distributed throughout the mixture
homogeneous mixture a mixture that is uniform in composition are evenly distributed and not easily distinguished
solution a homogeneous mixture; consists of solutes dissolved in a solvent
phase any part of a sample with uniform composition and properties
filtration a process that separates a solid from the liquid in a heterogeneous mixture
distillation a process used to separate dissolved solids from a liquid, which is boiled to produce a vapor that is then condensed into a liquid
element the simple form of matter that has a unique set of properties; an element cannot be broken down into simpler substance by chemical means
compound a substance that contains two or more elements chemically combined in a fixed proportion
chemical change a change that produces matter with a different composition than the original matter
chemical symbol a one or two letter representation of an element
chemical property the ability of a substance to undergo a specific chemical change
chemical reaction a change in which on or more reactants change into one or more products;characterized by the breaking of bonds in reactants and the formations of bonds in products
reactant a substance present at the start of a reaction
product a substance produced in a chemical reaction
precipitate a solid that forms and settles out of a liquid mixture
law of conservation of mass in any physical change or chemical reaction, mass in conserved; mass can be neither created nor destroyed
Created by: Zbwelch
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