9-29-08%20-%20Lecture%201%20-%20FundAB

9-29-08%20-%20Lecture%201%20-%20FundAB - Different Forms of...

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Different Forms of Matter: Solid (s) Liquid (l) Gas (g)
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Properties of Matter Physical: something you can observe without changing the identity Intensive: Does NOT depend on the size of the sample (temperature, density) Extensive: Does depend on the size of the sample (mass, volume) Chemical: the ability of a substance (or mixture) to change
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Base Units (SI) length = meter (m) mass = kilogram (kg) time = second (s) electric current = ampere (A) temperature = Kelvin (K) chemical amount = mole (mol) luminous intensity = candela (cd) *Prefixes for these are found on page A4, table 3 KNOW THESE base units and prefixes!
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What numbers are significant? 1. All nonzero numbers are significant 2. Zeros to the left of the number are NOT significant – called place holders 3. Imbedded zeros in the number are significant 4. If a zero is to the right of a decimal point and
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This note was uploaded on 01/04/2009 for the course CHEM 234234234 taught by Professor Johnson during the Fall '08 term at UCSD.

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9-29-08%20-%20Lecture%201%20-%20FundAB - Different Forms of...

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