Module 2: Measurements

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4 Terms

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Measurement

  • Is a collection of quantitative or numerical data that describes a property of an object or event

  • It is made by comparing a quantity with a standard unit

  • Inherently include error, which is how much a measured value deviates from the true value

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Units

(Numbers and Measurements in Chemistry)

  • Designate the type of quantity measured

<p>(Numbers and Measurements in Chemistry)</p><ul><li><p>Designate the type of quantity measured</p></li></ul><p></p>
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Prefixes

(Numbers and Measurements in Chemistry)

  • Are used with base units to report and understand quantities of any size

  • Are based on multiples of 10

<p>(Numbers and Measurements in Chemistry)</p><ul><li><p>Are used with base units to report and understand quantities of any size</p></li><li><p>Are based on multiples of 10</p></li></ul><p></p>
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Significant Figures

(Numbers and Measurements in Chemistry)

  • Indicate the amount of information that is reliable when discussing a measurement