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chapter 2 chemistry

mass a measure of the amount of matter the object contains
volume a measure of the space occupied by the object
extensive property a property that depends on the amount of matter in a sample
intensive property a 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 a quality or condition of a substance that can be observed or measured without changing the substance's composition
solid form of matter that has definite shape and volume
liquid form of matter that has an indefinite shape, flows, yet has a fixed volume
gas form of matter that takes both the shape and volume of its container
vapor describes the gaseous state of a substance that is generally a liquid or solid at room temperature, as in water vapor
physical change some properties of a material change, but the composition of the material does not change
mixture is a physical blend of two or more components
homogeneous mixture is a mixture in which the composition is uniform throughout
heterogeneous mixture A mixture in which the composition is not uniform throughout
solution Another name for a homogeneous mixture is a
phase is used to describe any part of a sample with uniform composition and properties
filtration The process that separates a solid from the liquid in a heterogeneous mixture
distillation a liquid is boiled to produce a vapor that is then condensed into a liquid
element is the simplest form of matter that has a unique set of properties
compound is a substance that contains two or more elements chemically combined in a fixed proportion
chemical change is a change that produces matter with a different composition than the original matter
chemical symbol Each element is represented by a one or two letter
chemical property The ability of a substance to undergo a specific chemical change
chemical reaction One or more substances change into one or more new substances
reactant A substance present at the start of the reaction
product A substance produced in the reaction
precipitate a solid that forms and settles out of a liquid mixture
the law of conservation of mass states that in any physical change or chemical reaction, mass is conserved
Created by: holhum



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