Fireworks Are Like a Confluence of Chemistry and Physics

Fireworks work by oxidizing flammables with a specific chemical that emits light at a certain frequency, creating the different colors we see. I always imagine fireworks as like a tiny, little colorful, controlled bomb that exploded only once it reached the sky. And if i's one of those big fireworks, it probably has a second charge in it. You can put a bunch of different metals in there that are going to burn at different colors, and that be what makes one pretty colours in the sky.