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### 23 Cards in this Set

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 absolute type the zero point on the kelvin temp. scale, equivalent to -273 celsius; all molecular motion theoretically stops at this temp. accepted value a quantity used by general agreement of what is being measured. accuracy the closeness of a measurement to the measurement to the true value of what is beng measured. celsius scale the temp scale in which the freezing point of water is 0 celsius, boiling point is 100 celsius density the ratio of the mass of an object to its volume error the difference between the accepted value and the experimental value. gram a metric mass unit equal to the mass of 1 cm3 of water at 4 celsius hydrometer a device used to measure the specific gravity of a liquid international system of units the revised version of he metric system , adopted by international agreement in 1960 kelvin scale the temp scale inn which the freezing pont of water is 273 K and the boiling pt is 373 K; 0 K is the absolute zero kilogram the mass of one liter of water at 4 celsius; it is the base unit of mass in SI liter the volume of a cube measuring 10 centimeters on each edge (1000 cm3) ; it s the common unprefixed unit of vlume in the metric system. meter the base unit of lenght in SI percent error the percent that a measured value differs from the accepted value precision describes the closeness or reproductability of a set of measurements taken under he same conditions qualitative measurement a measurement that gives descriptive nonnumeric results quantitative measurements a measurement that gives definate, usually numeric results scientifc notation expression of numbers in the form n x 10n (little squared n) where n is greater than or equal to one and less than 10 and n is an interger signifcant figure all the digits that can be known presicely in a measurement, plus a last estimated digit specific gravity the ratio of density of a substance to that of a standard substance(usually water) temperature a measure of the average kinetic energy of particles in matter; temperature determines the direction of heat transfer volume the space occupied by a sample of matter weight force that measures the pull of gravity on a given mass