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9 Cards in this Set
- Front
- Back
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element
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simplest type of matter; consists if one type of atom, therefore cannot be broken down by any chemical or physical means
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Molecule
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An independent structure of 2 or more atoms bound together
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Compound
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Two or more different elements that are bonded chemically
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Mixture
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consists of two or more substances (elements and/or compounds) that are physically intermingled
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law of mass conservation
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The total mass of substances does not change during a chemical reaction
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Law of definite or constant composition
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No matter what its source, a particular compound is composed of the same elements in the same parts (fractions) by mass
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Mass fraction
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mass of each element÷mass of the compound
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Percent by mass or mass %
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fraction by mass×100
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Percent yield
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[Actual yield ÷ theoretical yield] × 100
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