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Metals: Etching and Corrosion

Pig Weathervane Background. Metals constitute the largest group of elements in the Periodic Table. Artists and artisans have been drawn to the beauty, malleability, and strength of the pure metals. The brilliant colors of metallic compounds made them the natural choice as the pigments in paints Chemistry 103 students explore the reactions of copper to
make a pigment, to make jewelry, and to produce etching plates suitable for graphic artists to use in printmaking. Students also compare the properties of copper with those of aluminum and zinc. Copper exposed to the natural environment corrodes to produce the green patina seen on weathervanes, such as our friendly weathered pig, and the gutters of many Wellesley College buildings. Alloys, solid solutions of metals, of copper such as bronze are more resistant to weathering and so are widely used in outdoor statuary.
Pensive
Deborah Butterfield. Pensive, 1996 Bronze.

Experiments
1. Reactions of Copper - Downlaod PDF: Reactions of Copper
2. Electrochemistry - Download PDF:
Electroplating, Coloring and Etching of Metals
3. Synthesis and characterization of malachite (coming soon)

Links
1. Periodic tables on the Web:
http://www.wellesley.edu/Chemistry/chem120/ptlinks.html
2. All about copper from the Copper Development Association:
http://www.copper.org/
3. Etching in the Printmaking Studio at Wellesley College:
http://www.wellesley.edu/Art/ARTS212/html/Autobio.html
4. Sculpture:
a. UCLA Sculpture Garden:
http://www.hammer.ucla.edu/collections/
sculpture_garden_index.htm

b. Saint Gaudens Historic Site:
http://www.sgnhs.org/Augustus%20SGaudens%20 CD- HTML/Index/index.htm
c. August Rodin Web Images:
http://www.artcyclopedia.com/artists/rodin_auguste.html
d. Henry Moore Web Images:
http://www.artcyclopedia.com/artists/moore_henry.html
5. Malachite, copper-containing pigment, from Webexhibits on pigments:
http://webexhibits.org/pigments/indiv/ overview/malachite.html

Student Exhibition: Metals

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  • Professor Margaret Merritt, Wellesley College Chemistry Department
  • Created by: Leslie Chang '04 &Jerina Hajno '04
  • Page Created: July 23, 2001
  • Last Modified: August 16, 2001
  • Page Expires: August 31, 2002