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International System of Units

Chapter 1.4 Outline

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Chemistry
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International System of Units
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Quantitative properties - associated with numbers Units must always be specified Scientific measurements use the metric system SI Units Seven base units are used by SI Prefixes are used to modify powers of 10 of these units Length and Mass Mass - the measure of the amount of material in an object Temperature - a measure of hotness and coldness (physical property) Heat flows spontaneously from the hotter object to the colder one Celsius scale - created considering water's boiling and freezing points Kelvin scale - created so that 0K is the lowest possible attainable zero (absolute zero) The Kelvin and Celsius scales use the same-sized units around a different zero Derived SI Units - obtained by the multiplication or division of one or more base units

INT SCI physics review/basic unit study guide

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Science Study Guide Metric Prefixes: Deka da ten Deci d tenth Hecto h hundred Centi c hundredth Kilo k thousand Milli m thousandth Mega M million Micro ? millionth Giga G billion Nano n billionth Tera T trillion Pico p trillionth Difference between theory and hypothesis: A scientific theory is a hypothesis that has been tested and proven Scientific method: a method used in gaining, organizing, and applying new knowledge Recognize a problem Make an educated guess (hypothesis) about the answer Predict the consequences of the hypothesis Perform experiments to test it Make conclusions Experimental Components: Independent variable: part of the experiment that is purposely manipulated

Metric System

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Joules
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Conversions Regarding the Metric System and some Associated Formulas By Toomuchswag Sources: My Chemistry Notes and http://www.simetric.co.uk/siprefix.htm for some verification Most of the world besides the United States uses the metric system, a much simpler measuring tool according to many. The Metric system works in powers of ten: The prefixes work like this: Kilo Hecto Deca R (this is the regular unit, be it meters, grams, etc. we have given it the letter R) Deci Centi Milli Some important formulas: Density: Mass/Volume 1calorie or cal is the amount of energy required to raise the temperature of water by 1 degree Celsius

easy way to remember conversion chart

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good way to remember the conversions... GxxMxxKHD bu dcmxxuxxnxxp gee x x maybe x x kangaroos have dandrufft but you dont care much x x u x x need x x pantene giga, place holder, place holder, mega, place hold, place hold, kilo hepta deca base unit deci centi milli, place hold, place hold, micro, place hold, place hold, nano, place hold, place hold, pico
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