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9 Cards in this Set
- Front
- Back
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the three components of a measured value value are_______ |
numerical quantity, the unit, and the name of the substance or material |
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it indicates how close a measurement is to the true or accepted value |
accuracy |
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it refers to the closeness of measurements within a set of data |
precision |
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is the difference between the exact or known value of something and its approximate or measured value, in percentage form |
percent of error |
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three kinds of numbers ate encountered in chemistry and in everyday life |
counted, defined, measured |
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are expressed as exact whole numbers |
counted items |
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are exact numbers but are not always whole number. These numbers come from definition |
defined relations |
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those that are not obtained from reading measuring devices;these numbers are never exact |
measured numbers |
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is the curvature, either convex or concave, often observed when liquids are placed into a container |
meniscus |
