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Woodruff- Matter

Woodruff- Properties of Matter

QuestionAnswer
matter anything that has mass and takes up space, anything that has inertia
3 classes of matter elements, compounds, mixtures
substance matter in pure form- elements or compounds
element substance that cannot be broken down into simpler substances by ordinary means
atom smallest particle of an element that has the properties of the element
compound a pure substance made up of two or more elements that are chemically combined
molecule the smallest part of a covalent compound
mixture two or more substances which do not combine (unite) chemically, can be separated by physical means
four characteristics of mixtures can be separated by physical means, homogenous or heterogenous, are in a composition which may vary, can consist of two components which vary in properties and composition
homogenous mixture a mixture whose makeup is the same throughout; uniform
heterogenous mixture a mixture whose makeup differs from point to point; nonuniform
three classes of mixtures solutions, suspensions, colloids
Six techniques used to separate a mixture dissolving and filtering, evaporation, sifting, distillation, decanting, separating by magnets
dissolving and filtering find a solvent for one of the substances but not the other
evaporation heat or let stand to allow one substance to vaporize leaving the other behind
sifting separate by size through a sieve
distillation evaporate one substance from another by heating, then recover the substance by cooling
decanting gently pour off a liquid leaving the sediment behind
separating by magnets separate ferrous (iron) substances from nonferrous
What technique is used to separate sand and rocks? sifting
What techniques are used to separate sand and water? distillation, evaporation, filtering, decanting
What techniques are used to separate sand and salt? dissolving and filtering, evaporate
What techniques are used to separate salt and water? evaporate and distillation
What technique is used to separate oil and vinegar? decanting
Created by: seagullq
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