Chemistry History

|Name: Juan Francisco Herrera Vilchis |Registration: 2653987 |
|Course Title:|Teachers name : |
|Chemistry 1 |Hugo Skyol Pliego Cortes|
|Module: 1 Module is made of atoms |Activity :1 An introduction to Chemistry |
|Date: August 11 2011|Team: 612 |
|Bibliography: http://www.theozonehole.com/cfc.htmhttp://chemistry.about.com/od/physicalchemistrythermo/a/thermochemlaws.htm|

Title:
Termochemistry and CFCs

Introduction:
Chemistry studies all that its around us and how it is form thats why is so important to study it to learn better the world that isaround us so we can be more comfortable with it .

Contents:
What does termochemistry study?
Termochemistry study the energy changes accompanying chemical and physical reactions of energy.
Whatare CFCs?
Is an organic compound that contains carbon ,chlorine and fluorine, produced as a volatile derivative of methone and ethone a common subclass is the hydrochlorofluorocarbons HCFCs whichcontain hydrogen as well Freon is a dangerous substance and it destroys the ozone join with the dangerous substance of ammoniac for purposes of refrigeration and spray can propellants the CFCs andone of the elements that form CFCs is chlorine and when it goes up to the ozone layer the UV radiation destroy the bond between the chlorine and Freon and the chlorine joins to the ozone anddestroy it by joining with the oxygen .

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