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Mr. Brincks Physical Science 2009 -2010 Courtesy of Microsoft Office Clip Art.

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Presentation on theme: "Mr. Brincks Physical Science 2009 -2010 Courtesy of Microsoft Office Clip Art."— Presentation transcript:

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2 Mr. Brincks Physical Science Courtesy of Microsoft Office Clip Art

3 The Periodic Table has changed over time That was then…This is now… This is a picture of Dmitri Mendeleev's 1 st draft version for the periodic table (click image to enlarge)Dmitri Mendeleev's This is an example of how the periodic table looks like today. (click image to enlarge)

4 Modern Day Periodic Table Front side (Full-Scale)(Full-Scale) Back side (Full-Scale)(Full-Scale)

5 The Founder This is a picture of a young Dmitri Mendeleev, also known as, the father of the periodic table! (More Info.)(More Info.)

6 More about Mendeleev and his periodic table Scientific benefits of Mendeleev's table Mendeleev predicted the discovery of other elementsMendeleev predicted the discovery of other elements and left space for these new elements, namely eka-silicon (germanium), eka-aluminium (gallium), and eka-boron (scandium). Thus, there was no disturbance in the periodic table.germaniumgalliumscandium He pointed out that some of the then current atomic weights were incorrect. He provided for variance from atomic weight order. Shortcomings of Mendeleev's table His table did not include any of the noble gases, which were discovered later. These were added by Sir William Ramsay as Group 0, without any disturbance to the basic concept of the periodic table.noble gasesWilliam Ramsay There was no place for the isotopes of the various elements, which were discovered later.isotopes leev_Table_5th_II.jpg

7 Various other images of the periodic table and its founder Interactive Web Periodic Tables WebElements 2.0 beta by Mark Winter at the University of Sheffield has almost everything you would ever want to know. WebElements 2.0 beta The Chemicool Periodic Table from MITChemicool Periodic Table A Periodic Table from the Los Alamos National LaboratoryPeriodic Table Periodic Tables compiled by the Illinois State Geological Survey. Periodic Tables Periodic Table of the Elements (Flash required) More Periodic Tables Periodic Table of the Elements Mendeleevs Periodic Table ic-table-large.jpg ic-table-large.jpg More Pictures of Mendeleev Portrait of Mendeleev by Ilya Repin (1885). Portrait One more Mendeleev portrait by Ivan Kramskoy (1878).Mendeleev portrait Collection of Mendeleev photos. From The Science & Society Picture Library.photos One memorial portrait of Mendeleev.memorial portrait

8 Discussion Questions How are the elements organized in the periodic table? What are some of the properties of the elements by which they can be organized? How was Mendeleev's periodic table different from those of other chemists of the time? What kinds of information about the atomic structure of an element can you learn from the periodic table? What can you tell about the elements from the way they are ordered in the table? How can the periodic table help you predict how atoms of different elements might combine? Describe one type of chemical bond - metallic, ionic, or covalent. Air is approximately 21 percent oxygen gas (O 2 ) and 78 percent nitrogen gas (N 2 ). Can you tell from the information in the periodic table why helium balloons float in air? Which would you predict would be the heaviest and the lightest materials that would be good conductors of electricity? If carbon monoxide leaked into your house, would you predict that it would float to the top of the room or stay near the floor? What about carbon dioxide?

9 References Microsoft office clipart Teachers' Domain, Periodic Table of the Elements essay, published February 20, 2004, retrieved on August 24, 2009, Teachers' Domain, Periodic Table of the Elements, published February 20, 2004, retrieved on August 24, 2009, ml ml

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