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Vocab Chapter 3
Prentice Hall Chemistry, Chp. 3 Vocabulary
7
Chemistry
11th Grade
08/28/2007

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Term
Measurement
Definition
Quantity that has both a number and a unit
Term
Scientific Notation
Definition
A given number written as the product of two, a coefficient and 10 raised to a power.
Term
Accuracy
Precision
Definition
Measure of how close a measurement comes to the actual value of what is measured

Measure of how close a series of measurements are to one another.
Term
Accepted Value
Exerpiment value
Definition
Correct value based on reliable references

value measured in the lab
Term
Error
Definition
Difference between accepted and experimental value
Term
Percent error
Definition
Absolute value of the error divided by the accepted value, multiplied by 100%
Term
significant figures
Definition
Measurement includes all of the digits that are known, plus a last digit that is estimated.
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