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### 23 Cards in this Set

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 abosolute zero the zero point on the kelvin temperature scale, equivalent to -273.15 degrees C; all molecular motion theoretically stops at this temp. accepted value a quantity used by general agreement of the scientific community accuracy the closeness of a measurement to the true value of what is being measured Celsius scale the temp. scale--> freezing is 0 degress and boiling is 100 degrees density the ratio of the mass of an object to its volume error the difference between accepted value and experimental value experimental value a quanitive value measured during an experiment gram a metric mass unit equal to the mass of 1 cubic cm of water at 4 degrees C hydrometer a device used to measure the specific gravity of liquid Kelvin scale temp. scale --> freezing point is 273 K and boiling is 373 K; 0 K is absolute zero kilogram the mass of 1 L of water at 4 degrees; base unit of mass liter volume of cube measuring 10 cm on each edge; common unit of volume meter base unit of length in SI percent error the percent that a measured value differs from the accepted value precision describes the closenss, or reproducibility, of a set of measurements taken under the same conditions qualitative measurement a measurement that gives descrptive, nonumeric results quantitive measurement a measurement that gives definite, usually numeric results scientific notations express numbers n x 10^n where n is equal or greater than 1 and less than 10 and n is an integer significant figures all the digits that can be known precisely in a measurement, plus a last estimated digit specific gravity the ratio of the density of a substance to that of a standard substance temperature a measure of the average kinetic energy of paticles in matter; temp. determines the direction of heat transfer volume the space occupied by a sample of matter weight force that measures the pull of gravity of a given mass