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Fundamental substance that can't be changed chemically or broken down into anything simpler |
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A proposition or set of propositions, set forth as an explanation for an observed set of phenomena, either asserted merely as a provisional conjecture to guide investigation or accepted as highly probably in light of established facts |
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A coherent group of tested general propositions generally regarded as correct, that can be used as principles of explanation and prediction for a class of phenomena |
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A phenomena of nature that has been proven to invariably occur whenever certain conditions exist or are met. |
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A chart of the elements arranged by increasing atomic number so that elements in a given group have similar chemical properties |
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Any characteristic that can be used to describe or identify matter |
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Properties of matter whose values do NOT depend on the amount of a sample |
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Properties of matter whose values do depend on the amount of a sample |
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Properties of matter that do NOT involve a change in the sample's chemical makeup. |
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Properties of matter that do involve a change in the sample's chemical makeup. |
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The amount of matter in an object. SI unit is the kilogram. Independent of an objects location. |
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A measure of the force with which gravity pulls on an object. Depends on the location of an object. |
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Standard SI unit of length. |
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Standard SI unit of mass. |
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How close a value is to the true value of a given measurement |
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How well a number of independent measurements agree with one another. |
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The total number of units recorded for a measurement. |
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Rule #1 for significant figures |
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Zeros in the middle of a number are always significant. |
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Rule #2 for significant figures |
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Zeros at the beginning of a number are not significant. |
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Rule #3 for significant figures |
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Zeros at the end of a number and to the right of the decimal point are always significant. |
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Rule #4 for significant figures |
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Zeros at the end of a number and to the left of the decimal point may or may not be considered significant. |
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Rule #1 for Significant Figures and Rounding in Calculations |
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When multiplying or dividing values, the resulting number cannot have more significant figures than any of the original values. |
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Rule #2 for Significant Figures and Rounding in Calculations |
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When adding or subtracting values the answer cannot have more digits to the right of the decimal point than either of the original numbers. |
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If the first digit you remove is less than 5, round down by dropping that value and all following values. |
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If the first digit you remove isĀ 5 or greater, round up by adding 1 to the value to the left of the value dropped. |
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A method of converting one unit into an equivalent quantity with another unit. |
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An expression that describes the relationship between two different units. |
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Celcius to Fahrenheit Conversion |
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Fahrenheit to Celcius Conversion |
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Conversion between degree Celcius and Kelvin |
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The study of the composition, structure, properties, and changes of matter. |
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anything that occupies space or has mass; the physical material of the universe |
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the smallest representative particle of an element |
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a substance composed of two or more atoms |
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a substance composed of two or more elements united chemically in definite proportions |
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matter that has no fixed volume or shape; it conforms to the shape and volume of the container |
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matter that has a distinct volume, but no specific shape |
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matter that has both a definite shape and a definite volume |
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the three forms that matter can assume: solid, liquid, gas |
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matter that has a fixed composition and distinct properties |
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a combination of two or more substances in which each substance retains is own chemical identity |
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a mixture of substances that has a uniform composition; a homogeneous mixture |
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Law of Constant Composition (Law of Definite Proportions) |
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A law that states that the elemental composition of a pure substance is always the same, regardless of its source. |
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