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SI Units Base Unit _____________________________________________ Derived Unit _________________________________________ Two other quantities measured in derived units are Scientific Notation: ________________________________________________ _______________________________________________________________________ Scientific notation looks like this: _________________________________________ M = _________________________________________________ n = __________________________________________________ If the GIVEN number is > 1, the exponent (n) is _____________________. Example: 230. is the same as 2.30 x 102 If the GIVEN number is < 1, the exponent (n) is _____________________. Example: 0.23 is the same as 2.3 x 10-1 Standard Notation: this is where a number is taken from ____________________ and put back to its ______________________ by moving the __________ the specified number of times as shown by the ___________________. The exponent does NOT tell you how many zeroes to add; the exponent tells you ___________________________________. Standard notation looks like a normal number. Practice Problems Write the following numbers in scientific notation. 1. 0.000 0250 m ____________________ 2. 1 500 000 g _____________________ 3. 0.000 341 2 km ___________________ 4. 8.12 L __________________________ Write the following numbers in standard notation. 5. 3.412 x 10-3 cm ___________________ 6. 4.75 x 108 L _____________________ 7. 5.60 x 10-5 g _____________________ 8. 3.120 x 100 mL ___________________ Dimensional Analysis: This is a systematic approach to problem solving. It uses ____________________ to move, or convert, from one unit to another. A conversion factor is _______________________________________________________________________ ______________________________________________________________________. The Metric Scale K____H____D____ B-U_______D______C_______M_____ Practice Problems 1. 360s to ms 2. 4800g to kg 3. 5600dm to m 4. 72g to mg 5. 245ms to cs 6. 5dm to mm 7. 6800cm to km