Essay On Chemistry Of Fireworks

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Chemistry of Fireworks
An exploding firework is essentially several chemical reactions happening simultaneously or in rapid sequence. When you add some heat, you provide enough activation energy (the energy that kick-starts a chemical reaction) to make solid chemical compounds packed inside the firework combust with oxygen in the air and convert themselves into other chemicals, releasing smoke and exhaust gases such as carbon dioxide, carbon monoxide, and nitrogen in the process.
Example:
potassium nitrate + sulfur + carbon in charcoal form → potassium sulfide + nitrogen gas + carbon dioxide
2KNO3 + S + 3C → K2S + N2 + 3CO2

Fireworks get there colour form metal compounds contained inside. Different metal compounds give different colours. Sodium compounds give yellow and orange, for example, copper and barium salts give green or blue, and calcium or strontium make red. Different metal salts give different colours in fireworks displays.

Composition
Chemistry of firework sis based of the theory of combustion. The composition inside the firework contains 6 vital ingredients.

Fuel
Charcoal is the most commonly used fuel in fireworks. The fuel loses electrons (a negatively charged subatomic particle.) to atoms within the oxidiser. During this process, bonds are formed between the fuel and oxygen atoms forming a stable product. A small amount of energy is required to start combustion of this fuel-oxidiser compound. When combustion starts, the result is a release of energy

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