In class we were suposed to create a poster about an element that we chose. In this project I chose the element Rhenium because the name of the element inspired me and I thought it was going to be a good choice.
The most challenging thing about this project was to finish it in such a short amount of time and write interesting things about the element we chose.
I think I did a pretty good job on the poster because I added good facts and good picture representing the element. I think that I could get a 4-5 in modified assessment descriptors because I have The student describes how science is applied and how it may be used to address a specific problem or issue in a local or global context. And a 4-5 for Task Specific Descriptions because he poster describes the element clearly and shows that it has applications with a local or global significance.
What is the chemical symbol?
The chemical number for the Rhenium is Re and the atomic number 75. Rhenium is the second last element found on the periodic table and has one of the highest melting points and boiling points.
Where is it found?
The Rhenium was found in Germany in 1925 by Walter Noddack, Ida Tacke and Otto Berg. Those scientis found the Rhenium in the platinum ore and in the columbite. They also found rhenium in gadolinite and molybdenite. In 1928 the scientis were able to extract 1g of Rhenium from a 660kg molybdenite. The name Rhenium originates from the latin word Rhenus and in english it means Rhine river. Rhenium is also a very rare metal found in the crust of the eart.
How is it extracted?
Rhenium is selectively extracted from an aqueous solution containing various other metal values, e.g. copper, arsenic, iron, bismuth, antimony, tin, and lead in addition to molybdenum. The loaded organic phase, containing extracted molybdenum values, is separated from the aqueous raffinate, and the molybdenum values contained in the organic phase are stripped therefrom using an aqueous stripping solution containing ammonium hydroxide.
What other facts can you find?
Rhenium has a very high melting point and boiling point. The melting point is 3180°C and it is used in machines such as in the airplane turbine. It also has a boiling point of 5900°C. This metal is very useful in high temperated mechanics.