The Metric System: No Cussing Allowed

The Metric System: No Cussing Allowed
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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

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