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| the branch of chemistry involved with quantitative and qualitative identification of elements of compounds; constitutional chemistry |
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| the chemistry of living matter |
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| something that occupies space |
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| a body of coherent matter, usually of indefinite shape and often of considerable size |
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| that of which a thing consists; physical matter or material |
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| a visible exhalation, as fog, mist, steam, smoke, or noxious gas, diffused through or suspended in the air |
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| two or more substances that are not chemically united and that exist in no fixed proportion to each other |
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| a mechanically separate, homogeneous part of a heterogeneous system: the solid, liquid, and gaseous phases of a system. |
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| Law of conservation of mass |
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| the principle that matter cannot be created or destroyed |
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| a measurement that gives descriptive non numeric results |
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| Quantitative measurements |
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| the closeness of a measurement to the true value of what is being measured |
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| describes the closeness of a set of measurements taken under the same conditions. |
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| a quantity used by the general agreement of the scientific communtity |
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| Abs. value of error over accepted value times 100% |
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| Accepted value - experimental value |
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| International System of Units (SI) |
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| Based on the metric system |
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| the ratio of the density of a substance to that of a standard substance (usually water) |
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| determining the specific gravity of a liquid |
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| Also called Mendeleev's law. the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights. |
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| an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation |
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| law of definite proportions |
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| every definite compound always contains the same elements in the same proportions by weight |
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| the chemical formula with the least number of elements out of the set of empirical formulas having the same proportion of ions as elements |
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| Law of multiple proportions |
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| when two elements combine in more than one proportion to form two or more compounds |
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