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23 Cards in this Set
 Front
 Back
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
