Scientific Notation and Metric Prefixes PDF
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Uploaded by PeerlessRapture7499
Normandale Community College
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Summary
This document provides a detailed explanation of scientific notation and its applications, including conversions and examples. It also introduces metric prefixes and commonly used units in chemistry.
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19 Scientific Notation 20 Scientific Notation, continued: 21 Scientific Notation Examples: Decimal Format Scientific Notation 0.00013 125.00023 3.54 x 10-4 0.00100034...
19 Scientific Notation 20 Scientific Notation, continued: 21 Scientific Notation Examples: Decimal Format Scientific Notation 0.00013 125.00023 3.54 x 10-4 0.00100034 6.02 x 1023 6,974,000,000 0.00000158 1.37 x 103 1.37 x 10-3 1000 22 Metric Prefixes Base unit for mass = Base unit for distance = Base unit for volume = We can scale up (or scale down) the base units using nano micro milli centi deci base deca hecto kilo mega giga unit SMALLER BIGGER 23 Commonly Used Units for CHEM 1020 Mass: The standard unit of mass in the lab is. It is abbreviated. A milligram is a gram. Volume: The standard unit of volume in the lab is. It is abbreviated. A milliliter is a liter. A milliliter is a cm3. Density: The standard units for density are. 1.1 g/mL is 1.1 g/cm3. Distance: The standard unit for distance is. It is abbreviated. A kilometer is a meter. A centimeter is a meter. A millimeter is a meter. 24 Numbers EXACT: there is no uncertainty MEASURED: includes some uncertainty Can be counted Results from a measurement Results from a definition All measured quantities are subject to error MEASURED numbers always involve uncertainty because the measuring tool itself always has limited accuracy. Example #1: The ruler shown here is marked in centimeters, with gradations marking each 1 cm Example #2: The ruler shown here is marked in centimeters, with gradations marking each 0.1 cm. 25 Measured Numbers Examples:
