Chemistry Notes - August 27, 2006 (1.8-1.9)

Chemistry Notes - August 27, 2006 (1.8-1.9) - Section 1.8...

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August 27, 2006 Section 1.8 through 1.9 (Chang) Section 1.3.4, 1.3.5 (Thinkwell) Work end of chapter problems: Ch. 1: 2, 3, 5-10, 16, 21-26 Section 1.8 Scientific Notation Regardless of magnitude, all numbers can be expressed in the form N x 10 n where N is a number between 1 and 10, and n , the exponent, is a positive or negative integer (whole number). Any number expressed this way is considered to be scientific notation. When asked to express something in scientific notation, the assignment calls for you to find n. We count the number of places that the decimal point must be moved to give the number N (between 1 and 10.) If the decimal point must be moved to the left, n is a positive integer. If the decimal point must be moved to the right, n is a negative integer. Express 568.762 in scientific notation. o 5.68762 x 10 2 Express 0.00000772 in scientific notation. o 7.72 x 10 -6 n 0 is used for numbers not expressed in scientific notation. Usually omit the superscript when
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This note was uploaded on 04/20/2008 for the course CHE 105 taught by Professor Woodrum during the Fall '06 term at Kentucky.

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Chemistry Notes - August 27, 2006 (1.8-1.9) - Section 1.8...

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