The Metric System: No Cussing Allowed


This article from Industry Week in November 1981 outlines the importance of using the Metric System in the workplace and discourages the use of non-metric units such as inches, miles
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Slide1The Metric Systemfrom Industry Week, 1981 November 30
Slide2No Cussing!The following 4-Letter words are forbidden here: Inch Mile Foot Pint Yard Acre And we never swear the BIG F (use o C) Please keep it clean and Metric
Slide3SI System• The International System of Units • Derived Units Commonly Used in Chemistry • Area and Volume: Derived Units • Prefixes in the SI System Map of the world where red represents countries which do not use the metric system
Slide4A Common System for TradeIn 1790, the French government appointed a committee of scientists to develop a universal measuring system. English system of measurement originated in 1215 with the signing of the Magna Carta. It attempted to bring uniform measurements to world trade. It took ~10 years, and they unveiled the Metric system. length meter m mass gram g volume liter L time second s
Slide5The International System of Units L e n g t h m e t e r m M a s s k i l o g r a m k g T i m e s e c o n d s A m o u n t o f s u b s t a n c e m o l e m o l T h e r m o d y n a m i c t e m p e r a t u r e K e l v i n K E l e c t r i c c u r r e n t a m p e r e s a m p s L u m i n o u s i n t e n s i t y c a n d e l a c d Quantity Name Symbol Dorin, Demmin, Gabel, Chemistry The Study of Matter , 3 rd Edition, 1990, page 16
Slide6The Original Metric ReferenceH 2 O = 1 liter Volume 1 kg H 2 O = 1 kilogram Mass 1/10 m 1/10 m 1/10 m = 1 meter Length 1/10,000,000 Earth
Slide7The Official Standard Meter
Slide8The Official Standard Kilogram
Slide9Derived Units CommonlyUsed in Chemistry A r e a s q u a r e m e t e r m 2 V o l u m e c u b i c m e t e r m 3 F o r c e n e w t o n N P r e s s u r e p a s c a l P a E n e r g y j o u l e J P o w e r w a t t W V o l t a g e v o l t V F r e q u e n c y h e r t z H z E l e c t r i c c h a r g e c o u l o m b C Quantity Name Symbol
Slide10Area and Volume: Derived UnitsArea = length x width = 5.0 m x 3.0 m = 15 ( m x m ) = 15 m 2 Volume = length x width x height = 5.0 m x 3.0 m x 4.0 m = 60 ( m x m x m ) = 60 m 3
Slide11Prefixes in the SI System Power of 10 for Prefix Symbol Meaning Scientific Notation _______________________________________________________________________ mega- M 1,000,000 10 6 kilo- k 1,000 10 3 deci- d 0.1 10 -1 centi- c 0.01 10 -2 milli- m 0.001 10 -3 micro- 0.000001 10 -6 nano- n 0.000000001 10 -9 The Commonly Used Prefixes in the SI System Zumdahl, Zumdahl, DeCoste, World of Chemistry 2002, page 118
Slide12Metric ArticleKeys Keys Metric Article ( questions ) Metric Article (questions) http://www.unit5.org/chemistry/intro.html