Science - Pure Substances vs. Mixtures (Vocab)

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Child Development

8th

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12 Terms

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Pure Substance
Substance consisting of 1 type of atom / molecule
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Element
Substance made up of 1 type of atom with unique properties; Cannot be further broken down
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Compound
Multiple substances that are chemically joined
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Molecule
2 or more atoms that are joined
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Mixture
Multiple substances that are physically joined
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Heterogenous
Uneven mixture of particles that are different sizes
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Homogenous
Even mixture of particles that are the same size
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Solution
Homogenous mixture; Solute dissolved into a solvent
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Solute
Substance that dissolves into another substance
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Solvent
Substance that another substance dissolves into (Water is the universal solvent)
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Colloid
Substance containing unevenly sized particles, but it’s not visible
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Suspension
Evenly mixed when stirred, uneven / un-mixed when left to settle