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23 Cards in this Set
 Front
 Back
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
