Sunday, January 3, 2016. Cleaning Coins with Acids and Bases. Sometimes, coins have a strange, rough, and dark look to them. When metals react with oxygen, it causes tarnish and rust. Why does this happen? When the copper atoms in a penny join with oxygen atoms in the air, it creates copper oxide which forms on the penny. This is what makes the coin look old, dirty, and rusty. It also creates tarnish and makes the coin look like it has discoloration.

Yeah this blog is pretty darn cool. Wednesday, June 10, 2009. Sitting here in the Mac lab. listening to the loud music coming from Final Fling at the Crow Bar. What a great way to spend my Wednesday night. Over the semester, we signed up for a bunch of different websites; Flickr, Delicious, and Technorati. I learnt a bit about how tags and tagging works, a.

Tuesday, June 2, 2009. I must say, for me, it has been an enlightening if not harrowing experience. However, it has been a extremely positive one in the end. I have converted to Mac and that alone is a significant achievement. There is no question in my mind that I will benefit tremendously from the knowledge gained. it is true that I see it from three different perspectives. Donations can be made on my website.

Emigración de las creencias de lugares mitológicos al Nuevo Mundo. Saturday, December 17, 2005. La Importancia del Imaginario en la Conquista Americana. El mito de la ciud.

Friday, December 16, 2005. Reacción en Chile ante el atentado. Ante el atentado ocurrido en España el 11 de Marzo, Chile no se quedó inmune. Las imágenes de dolor y de desolación de los españoles marcaron profundamente las pautas períodisticas del día 11 y 12, dándose una total cobertura a lo ocurrido en España. Osición al envío de tropas a Irák. Es así como llegado el .