Chem 1
Oct. 9, 2012
Chapter 2 Review
Dr. Casagrande/Mrs. Rinaldi
•
Recall & recognize the SI units for length, volume, mass, time, and temperature.
•
Be able to use the density equation to calculate the density of a sample given its mass and volume.
•
Recognize when a number is written in correct scientific notation and convert numbers from decimal
notation to scientific notation and viceversa.
•
Recognize and explain the difference between accuracy and precision in measurements.
•
Calculate the percent error in a measurement given the experimental and accepted values using the
formula in Chart B in the information packet.
•
Determine the number of sig. figs. in a number or measurement and round all calculations to the correct
number of significant figures.
•
Be able to perform common dimensional analysis problems given the needed relationships.
•
Explain how the metric prefixes modify the base units, and be able to use the conversion factors in Chart
A in the information packet to convert between units.
•
Describe a graph, independent and dependent variables, direct and inverse relationships, determine the
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 Fall '10
 Casagranda
 International System of Units, SI prefix, Kilogram, Accuracy and precision

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