Monday, December 19, 2011

Homework on bond discovery

Facts on Bonding Discovery
      When applying strain to the atoms they become more chemically reactive
       The application of strain also results in structural changes
       Since the strain affects the reactivity level, chemists will be able to alter chemical reactions to get different results
        This discovery allows chemists to be more selective in the manufacturing process of certain things
     

Saturday, December 10, 2011

Dry Ice

Dry Ice
     -Dry ice is solidified carbon dyoxide.
     -It is made by pressurizing and refrigerating pure CO2 gas into liquid CO2, and than letting it expand again, and then pressurized into shapes.  ie: cubes, pellets...
     -Dry Ice has many uses, such as removinf floor tiles, to purge fuel tanks, to pack freshly caught fish, and many other uses, like creating a fog in a movie...etc.
     -The "smoke" that is created from dry ice is really the gaseuos form of CO2.  Since CO2 normally skipps its liquid state, the ice does not melt, but sort of just evaporates from being a solid.
    -Dry Ice is an average -109.3 degrees fareinheit, and is much colder and less messy than regular H20 "wet" ice.

Thursday, December 8, 2011

Alloys

An alloy is a combination of two or more elements, and usually have different chracteristics than two elements that it is made up of. 
      
       1.One well known example of an alloy is steel, which is an alloy of iron and another element. 

       2.Bronze, which is an alloy of copper and tin was the first discovered alloy.