How Do Fireworks Work?

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Everyone loves fireworks, except for small children and dogs, but what exactly goes into making the explosive and beautiful balls of fire?

Fireworks are a lot more than balls of explosive powder with a fuse. They are perfectly constructed chemical masterpieces used in celebrations all over the world. First, let’s look at how pyrotechnicians create the various colors of fireworks.

When a firework explodes, it essentially is a chain reaction of chemical reactions that result in different shapes and colors in the sky. As you likely expected, the explosion creates heat that starts the burning of different chemicals packed within the shell. To make different colors, pyrotechnicians have to use different chemical compounds, some more dangerous than others. These compounds are typically metal salts which burn specific colors. Compounds based on Sodium will burn different shades of yellow or orange, copper or barium salts will burn green or blue, and calcium or strontium make red shades. Combining these compounds in different layouts within the projectile will create different shapes.

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