Mandisa Keswa

Definition:A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.I will be presenting the structure, history, and importance of Platinum.

P=78P=78N=117N=117

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-Shell K

Shell L

Shell M

Shell N

Shell O Nucleus

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Platinum is a silvery, odorless solidIt has 78 electrons and protons, and it has 117 neutrons.Atomic weight: 195.08Atomic number: 78Symbol: Pt

Platinum was discovered in 1755It was discovered by Julius Ceaser ScaligerMen called conquistadors found grains of unknown metalThey found out Platinum was very expensive and rareThat’s how Platinum became a metal that everybody wantedWas also found in South Africa and Russia

Platinum is and was used a lot in America Compounds of Platinum are used to treat cancerAlso, it was used in 1400 BC for decorations to the Egyptians, and widely in South AmericaPlatinum, palladium and rhodium produced are used in vehicle emission technologyPlatinum is used in glassmaking equipmentInvesting in platinum may be done in the future

Platinum is used to make jewelry settingsPlatinum is one of the densest metals It is rarer and more expensive than goldTeams up with Cisplatin to make a substance that helps fight cancerThis precious metal is highly valued for its beauty and purity Platinum’s color, strength, hardness and resistance to tarnish are its advantages

I learned…Platinum is highly useful and highly expensiveUsed as many types of substances people want

to make moneyNeeds to be invested for future usesVery different atomic structure than most

elements Has a very high demand in AmericaHas been used a lot during the past, present,

and future

"A Periodic Table of the Elements at Los Alamos National Laboratory." Web. 10 Dec. 2010.

“Elements." Chemical Elements.com - An Interactive Periodic Table of the Elements. Web. 10 Dec. 2010.

"Elements." Current Science. POWER Library. SIRS Discoverer. Web. 10 Dec. 2010.

"It's Elemental - The Periodic Table of Elements." Science Education at Jefferson Lab. Web. 10 Dec. 2010.

Knapp, Brian J., David Woodroffe, and David A. Hardy. Elements. Danbury, CT: Grolier Educational, 2000. Print.

"Periodic Table - Chart of All Chemical Elements." Lenntech. Web. 10 Dec. 2010.

“WebElements.” Periodic Table of the Elements. Web. 10 Dec. 2010.