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Vocab
Chapter 1-2
| Term | Definition |
|---|---|
| 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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