1. How Tarnish Is Removed From Silver

2. What You Need: <-- A bit of tarnished silver Some aluminum foil -- > < -- Baking soda Water! -- > AND…

3. Introducing the Atoms: < -- Silver sulfide (Ag2S) or, tarnished silver <-- Dihydrogen oxide (H2O) or, water Sodium bicarbonate -- > (NaHCO3) or, baking soda Black = C, Red= O, Grey= Na & White= H Aluminum metal -- > (Al) Reactants:

4. What Happens? --> + + Silver Sulfide Aluminum Metal Silver Metal Aluminum Sulfide With the help of the baking soda dissolved in water, the sulfide (tarnish) gets transferred from the silver to the aluminum, leaving the silver metal looking like new. This process is an example of Single Displacement

5. Products: < -- Silver metal (Ag) Aluminum sulfide -- > (Al2S3) or, tarnished aluminum + Dihydrogen carbonate -- > (H2CO3) + Sodium hydroxide (NaOH) or, baking soda dissolved in water AND…

6. Recap: To get rid of the tarnish on the silver, the baking soda is added to the water and mixed around so that the baking soda gets dissolved in the water This way, when the aluminum foil and tarnished silver are added to the mixture, the tarnish gets transferred to the aluminum foil But who cares? It’s only aluminum foil The equation for this process is Ag2S + Al -- > Ag + Al2S3 This is also an example of a Single Displacement equation

7. Henry Moore Was born July 30, 1898 in Castleford, England Was born July 30, 1898 in Castleford, England British Classical, Pre-Columbian, African & Modern metal sculptor British Classical, Pre-Columbian, African & Modern metal sculptor Made sculptures of organic shapes Made sculptures of organic shapes Worked with mostly bronze Worked with mostly bronze Studied at Leeds School of Art (now Leeds College of Art) in London, England in 1919 Studied at Leeds School of Art (now Leeds College of Art) in London, England in 1919 Famous universally Famous universally Died August 31, 1986 in Much Hadham, England Died August 31, 1986 in Much Hadham, England Was born July 30, 1898 in Castleford, England Was born July 30, 1898 in Castleford, England British Classical, Pre-Columbian, African & Modern metal sculptor British Classical, Pre-Columbian, African & Modern metal sculptor Made sculptures of organic shapes Made sculptures of organic shapes Worked with mostly bronze Worked with mostly bronze Studied at Leeds School of Art (now Leeds College of Art) in London, England in 1919 Studied at Leeds School of Art (now Leeds College of Art) in London, England in 1919 Famous universally Famous universally Died August 31, 1986 in Much Hadham, England Died August 31, 1986 in Much Hadham, England "To be an artist is to believe in life." - Henry Moore

8. Examples of his work: < --- “Three Way Piece No. 2” in Toronto, ON “Hill Arches” at The National Gallery of Australia --- >

9. “Large Upright Internal/External Form” Kew Gardens, London, England --- > <--- “Die Liegende”Stuttgart, Germany

10. Bibliography Chemistry Recourses: Coonce, Janet. Silver Tarnish Removal: Electrochemistry. 2008. video. youtube.comWeb. 17 Dec 2012.. Henry Moore bio: "Biography - Henry Moore - Modern Abstract, Organic Sculpture." HenryMoore.com. N.p.. Web. 17 Dec 2012.. Henry Moore bio & sculptures: "Henry Moore - Wikipedia, the free encyclopaedia." wikipedia.org. Wikipedia, 17 2012. Web. 17 Dec 2012.. All photos (except for Henry Moore’s sculptures) are courtesy of Google Images