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| distinguish one kind of matter from another |
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| describe how a substance unites with other substances to from new substances |
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| take place when two or more substances unite or break apart chemically |
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| groups of two or more atoms linked together by chemical bonds |
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| composed of only one type of atom |
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| composed of different types of atoms linked together |
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| determined by the kind or number of atoms; the sum of the atomic masses of all the atoms in the molecule |
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| composed of several elements or compounds that are physically mixed but not chemically united |
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| elements and compounds whose chemical composition is the same throughout |
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| a uniform mixture formed by two completely mixed substances |
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| a mixture containing tiny clumps or particles that remain suspended within the mixture |
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| combination of chemical symbols and numbers showing the type and number of atoms in a compound |
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| formula which gives the number of each type of atom in a molecule |
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| formula which shows the general arrangement of the atoms in a molecule |
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| formula which shows only the simplest ratio of atoms in a molecule |
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| attractive forces that link atoms together |
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| a chemical bond that results from the sharing of valence electrons between atoms |
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| a chemical bond that results from two atoms sharing a single pair of electrons |
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| formed by the sharing of TWO pairs of electrons |
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| formed by the sharing of THREE pairs of electrons |
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| a bond formed when both atoms have the same strength of electrical attraction for the shared electrons |
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| a bond formed when one of the atoms has a stronger electrical attraction for the shared electrons than does the other atom |
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| a molecular with oppositley charged ends or "poles" |
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| a bond formed when positively charged ions are electrically attracted to negatively charged ions |
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| formed by mutually attracted ions; consists of millions or billions of ions all held together by a universal electrical attraction |
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| know as the simplest ratio of the ions in an ionic crystal |
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| the forces of adhesion and cohesion between molecules that bind them together to larger objects |
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| the intermolecular force that is only present between polar molecules |
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| an intermolecular force that occurs between all molecules (polar or nonpolar); the only intermolecular force for nonpolar molecules |
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| a particularly strong intermolecular force between certain molecules containing covalently bonded hydrogen atoms |
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| molecules of hard or brittle substnaces often arranged in a regular three-dimensional pattern |
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| the temperature at which melting occurs |
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| the temperature at which boiling occurs |
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| pressure causing the molecules of a liquid to have a certain tendency to evaporate or escape from the liquid due to random molecular motion |
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| the ability of one substance to be dissolved in another substance |
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| th substance in a solution which dissolves |
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| the subtance into which the solute dissolves in a solution |
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| substance that will not readily dissolve in a given solvent is know as... |
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