Ongoing discussion for students in Chemistry III

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Monday, September 19, 2011

Fireworks: The Science behind all the noise and colors



Fireworks are used to celebrate special occasions and people flock to see them displayed during the night time. Many people don't know though, that there is a lot behind the big bang and beautiful colors of fireworks. There is a whole world of chemistry to be explored, which explain how fireworks are assembled and happen. The science of fireworks is called pyrotechnics which is the way of making fireworks emit heat, gas, light, sound and smoke. The other important term we must know is thermochemistry. Thermochemistry is the study of heat and energy that are linked with physical transformations and or chemical reactions. display pyrotechnics are a great way to view thermochemistry at work and at their best. There are two ways fireworks get their colors. The first way is called luminescence or cold light, the luminescence lights are formed using energy sources other than light. The other way fireworks can attain their color is called incandescence. Incandescence is the process of getting light through differing temperatures of heat. Since the heat has differing temperatures it emits a large UV spectrum of colors including. If someone one wants to control which colors will explode from the fireworks they can make a molecule or electron absorb enough energy so that it becomes unstable. Then after the molecule returns to a normal state of energy and releases its excess energy. The amount of excess energy the molecule or electron releases will then result in which color the fireworks becomes. Fireworks are a complicated science but once it works people are amazed by their breathtaking beauty and spectacular colors.

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