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chem ch 3 test
Terms in this set (29)
the quantity 44 liters expressed in cubic meters is
when a test instrument is calibrated, does its accuracy, precision, or reliability improve?
how many significant figures are in the measurement 40,500 mg?
if the temperature changes by 100 K, by how much does it change in degree Celsius?
100 degree celsius
what is the boiling point of water in kelvins?
what is the temperature of absolute zero measured in degree celsius?
-273 degree celsius
the closeness of a measurement to its true value is a measure of its
when multiplying and dividing measured quantities, the number of significant figures in the result should be equal to the number of significant figures in
the least precise measurement
which of the following volumes is the smallest?
in the measurement 0.503 L, which digit is the estimated digit?
the weight of an object
depends on its location
what is the metric system prefix for the quantity 0.000001?
what is the volume of a salt crystal measuring 2.44 ^ 10 -2 m by 1.4 ^ 10 -3 m by 8.4 ^ 10 -3 m?
2.9 ^ 10 -7 m3
which of the following units is NOT an official SI unit?
the chief advantage of the metric system over other systems of measurement is that it
is in multiples of 10
chlorine boils at 239K. what is the boiling point of chlorine expressed in degrees Celsius?
-34 degree celsius
as the density of a substance increases, the volume of a given mass of that substance
what is the temperature -34 degree celsius expressed in kelvins?
a cubic meter is about the same as the volume occupied by a
which of the following mass units is the largest?
if the temperature of a piece of steel decreases, what happens to its density?
the density increases
which group of measurements is the most precise?
2 g, 2.5 g, 3g
what is the SI unit of mass>
three different people weigh a standard mass of 2.00g on the same balance. each person obtains a reading of 7.32 g for the mass of the standard. these results imply that the balance that was used is
which of the following measurements is the most accurate?
which temperature scale has no negative temperatures?
density is found by dividing
mass by volume
if a liter of water is heated from 20 degree celsius to 50 degree celsius, what happens to its volume?
the volume increases
what quantity is represented by the metric system prefix deci-?
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