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18 Cards in this Set

  • Front
  • Back
Define qualitative data
consist of descriptive terms
Define quantitative data
consists of measurements
What measurement system do all scientists use?
SI system
Measurements for mass, length, time, and amt. subst.
kilogram (kg), meter (m), seconds (s), mole (mol)
one piece of data is called
list the prefixes
mega-, kilo-, hecto-, deka-, deci-, centi-, milli-, micro-, nan-, pico-, femto-
Kelvin is an ...
absolute scale (all molecular motion would stop at 0K)
Convert K into C
Convert C to F
Convert F to C
Cominations of SI units are called...
Derived SI units
the tool to convert measurements is called...
dimensional analysis or factor-label method
Inexact numbers are numbers...
obtained by measurement.
Define Precision
Precision refers to how close a series of measurements are to one another.
Define Accuracy
Accuracy refers to how closely individual measurements are to a true or accepted value.
Sigfigs rule for zeros
between nonzeros = important
at the end and before a decimal point = important
Sigfigs rule for multiplying and dividing
the answer has as many sigfigs as the measurement with the least # of sigfigs
Sigfig rule for addition and subtraction
answer has as many digits after the decimal point as the measurement with the fewest number of digits after the decimal point