Question

How do fireworks work? 1 Look and write the words from the box. fuse gunpowder metal salts lithium 'metal salts sodium copp​

Answer 1

Fireworks work by a chemical reaction where an explosive mixture of gunpowder and other chemicals is ignited to create a colorful and bright display. The gunpowder mixture contains three main components: fuel, oxidizer, and a chemical binder.

When the firework is lit, heat from the burning fuse first ignites a small amount of gunpowder in the firework's tube. This initial explosion creates enough heat and pressure to activate the oxidizer, which then starts burning the fuel. The burning fuel produces gases that rapidly expand and force the firework's shell outward, releasing the colorful stars and other effects.

Different chemicals added to the firework mixture produce different colors and patterns in the sky. For example, the chemical strontium chloride creates a red color, while copper chloride produces a blue color. The effects can also be enhanced by adding special elements like aluminum, magnesium, and titanium for brighter colors and brighter bursts.

Timing and spacing of the charges in the shell, as well as the size of the shell and height of the burst, are all factors that can be adjusted to create different firework displays.