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Chapter 2

Properties Of Matter

TermDefinition
pure substance matter that always has exactly the same compisition
element a substance that can not be broken down into simpler substances
atom the smallest particle of an element
compound a substance made from two or more simpler substances and can be broken down into those simpler substances
heterogeneous mixture parts of a mixture are noticeably different from one another
homogeneous mixture substances are so evenly distributed that it is difficult to distinguish one substance in a mixture from another
solution the mixture that forms when substances dissolve and form a homogeneous mixture
suspension a heterogeneous mixture that separates into layers over time
colloid contains some particles that are intermediate in size between the small particles in a solution and larger particles in a suspension
physical property any characteristic of of a material that can be observed or measured without changing the composition of the substances in the material
viscocity a liquids resistance to flowing
conductivity a materials ability to allow heat to flow
malleability the ability of a solid to be hammered without shattering
melting point the temperature in which a substance changes from a solid to a liquid
boiling point the temperature at which a substance boils
filtration a process that separates materials based on size of their particles
distillation a process that separates the substances in a solution based on their boiling points
physical change occurs when some of the properties of a material change but the substances in the material stay the same
chemical property any ability to produce a change in the composition of matter
flammability a materials ability to burn in the presence of oxygen
reactivity how readily a substance combines chemically with other substances
chemical change occurs when a substance reacts and forms one or more new substances
precipitate any solid that forms and separates from a liquid mixture
Created by: rodney.stover
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