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Measurement, SI Units, and Conversion Terms

Measurement, SI Units, and Conversion Terms

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Tags: science   ela   chemistry   rst.9-10.4   rst.11-12.4   high school   measurement   hs-ps1-2   ngss   ps1-2   conversion   si units  

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Measurement
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A value that consists of a number and a unit.
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Scientific Notation
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A way of conveniently writing numbers that are too big or too small to be written out in full.
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Accuracy
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The degree to which the result of a measurement conforms to the correct value or a standard.
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Precision
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A measurement evaluating how close together a set of measurements are to one another.
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Accepted Value
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A value of a substance accepted by almost all scientists.
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Experimental Value
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A measurement collected during actual experimentation.
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Error
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Percent Error
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Significant Figures
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A measurement of a value that includes all of the known digits and one additional estimated digit.
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SI Units
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A version of the metric system that includes many of the units that chemists use every day.
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Meter (m)
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The SI unit for measuring length.
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Liter (L)
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The commonly used non-SI unit for measuring volume.
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Kilogram (kg)
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The SI unit for measuring mass.
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Weight
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A measurement of the gravitational force on a mass.
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Temperature
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A measurement of the hotness or coldness of an object.
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Celsius (ºC)
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A unit of temperature that sets the freezing point of water at 0º and the boiling point of water at 100º.
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Kelvin (K)
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A unit of temperature that sets the freezing point of water at 273.15 and the boiling point of water at 373.15
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Absolute Zero
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A temperature equal to -273.15ºC or zero Kelvin (0K).
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Energy
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The ability to do work or create heat.
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Joule (J)
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The SI unit of energy.
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A calorie (cal)
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The amount of energy needed to raise the temperature of one gram of water by 1ºC.
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Conversion Factor
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A ratio used to convert equivalent measurements.
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Dimensional Analysis
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A system used to solve questions via the units of measurement.
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Density
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