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Pearson Chemistry Chapter 3 Vocabulary +
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Gravity
The exact vocabulary and definitions from chapter 3 of the Pearson Chemistry textbook.
Terms in this set (18)
scientific notation
a given number is written as the product of two numbers: a coefficient and 10 raised to a power
accuracy
a measure of how close a measurement comes to the actual or true value of whatever is measured
precision
a measure of how close a series of measurements are to one another, irrespective of the actual value
percent error
the absolute value of the error divided by the accepted value, multiplied by 100%
significant figure
the figures in a measurement include all the digits that are known, plus the last digit that is estimated
liter (L)
the volume of a cube that is 10 centimeters (10 cm) along each edge
kilogram (kg)
the basic SI unit of mass
Kelvin scale
sets the freezing point of water at 273.15 kelvins (K), and the boiling point is 373.15 K
Density
the ratio of the mass of an object to its volume
conversion factor
a ratio of equivalent measurements
Sig fig rule #1
all non zero numbers are significant
Sig fig rule #2
zeros between non zero numbers are significant
Sig fig rule #3
zeros to the left of non zero numbers are not significant
Sig fig rule #4
If there is no decimal, zeros to the right of non zero numbers are not significant
Sig fig rule #5
If there is a decimal, all zeros to the right of non zero numbers are significant
Sig fig rule #6
All numbers in scientific notation are significant
Sig fig addition/subtraction
round the answer to the same number of decimal places as the value with the least number of decimal places
Sig fig multiplication/division
round the answer to the same number of sig figs as the value with the least number of sig figs
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