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A pure substance is a sample of matter with both definite and constant composition with distinct chemical properties.
Added 12/14/2017 4:35:47 AM
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A mixture is a material made up of two or more different substances which are mixed but are not combined chemically.
Added 12/14/2017 4:36:24 AM
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Homogeneous means: of uniform structure or composition throughout.
Added 12/14/2017 4:37:22 AM
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Heterogeneous means: composed of parts of different kinds; having widely dissimilar elements or constituents.
Added 12/14/2017 4:38:12 AM
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Phase is the position of a point in time (an instant) on a waveform cycle.
Added 12/14/2017 4:38:45 AM
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