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19 Cards in this Set
- Front
- Back
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Anything that has mass and takes up space. Another word for this is substance.
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Matter
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A substance of constant composition that possessed definite qualities.
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Pure substance
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A pure substance that can't be broken down into simpler substances by physical or chemical means.
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Element
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The smallest particle into which an element can be divided and still be the same substance. These are the building blocks of matter
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Atom
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A pure substance consisting of atoms of two or more elements that are chemically combined n a fixed proportion.
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compound
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A particle consisting of two or more atoms tied together.
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molecule
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A combination of two or more substances that are not chemically combined.
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mixture
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A combination of substances in which the particles are not uniformly distributed and are large enough to be easily seen; one sample is not like every other sample.
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heterogeneous mixture
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A combination of substances in which the properties and appearances are the same throughout; one sample is like every other sample.
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homogeneous mixture
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a method of separating a liquid mixture by heating it to that the liquid evaporates and then condenses
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distillation
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A method of separating liquid mixtures which is the use of paper or other materials to remove solid particles from a liquid mixture.
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Filtration
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A method of separating substances based on the tendencies of different substances to be absorbed.
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Chromatography
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What is a mixture?
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A combination of two or more substances that are not chemically combined.
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How does a mixture differ from a compound?
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The substances in a mixture are not chemically combined. A compound is a pure substance made of elements that are chemically combined.
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Name two types of pure substances.
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Atom and Element
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What is the difference between a heterogeneous mixture and a homogeneous mixture?
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A heterogeneous mixture is a comination of substances that are not uniformly distributed, a homogeneous mixture has substances that are the same throughout the mixture.
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A mixture in which the particles of a substance are mixed throughout but are large enough that they will settle.
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suspension
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a mixture in which the particles of a subtance are mixed throughout and are not large enough to settle
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colloid
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The scattering of light by colloids
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the Tyndall effect
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