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chemistry chapter 3

QuestionAnswer
any system of measurement based on a decimal scale metric system
the act of comparing an unknown quantity to a standard unit measurement
a scale of a measurement instrument, accurately subdivided into measurement units graduated
the only SI base unit that is still defined by a man-made object kilogram
the SI unit that represents the number of particles in a substance mole
Measurement of mass kilograms
units of measurements that come from basic SI units derived units
the SI base unit for temp. kelvin
the SI unit would measure the volume of a substance cubic meter
the derived SI unit for the square meter area
correct abbreviation for nano n
nano in scientific notaion -9 10
bilionth in numbers 0.000 000 001
correct abbreviation for micro ยต
micro scientific notaiton -6 10
micro in numbers 0.000 001
correct abbreviation for milli m
million in scientific notaion -3 10
million in number 0.001
correct abbreviation for centi c
hundredth in scientific notaiton -2 10
hundredth in number 0.01
correct abbreviation for deci d
tenth in scientific notation -1 10
tenth in number 0.1
correct abbreviation for kilo k
kilo in scientific notation 3 10
kilo in number 1000
correct abbreviation for mega M
mega in scientific notaion 6 10
mega in number 1000000
a fraction equal to one that contains both the original units and its equivalent value in a new unit is called a conversion factor
to calculate the percent error, you must take the absolute value of the----- value minus the ------- value, divide by the ------- value, and multiply 100% observed/ acceptive/ accepted
the smaller the percent error of a measurement is, the more ------ the measurement is accurate
an instrument that is used to compare an object directly to a scale or that displays the reading using a pointer analog
when using an analog metric instrument, you should estimate the measurement to the nearest ------- of the smallest decimal subdivision on the scale tenth
the display your calculator's answer is read in digital
the data that significant digits only apply to measured
digits that are considered significant in a measurement nonzero
indicates the precision of an instrument and helps scientists report measurements honestly significant digits
Not a common step in problem solving graduating
Created by: brpa8501
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