What makes fireworks explode ?

Chemical reactions occur when two or more substances interact with each other and form new substances. During a chemical reaction, the atoms in the reactants rearrange themselves to form new chemical bonds and create different molecules than the ones present before the reaction. This process can result in the release or absorption of energy in the form of heat, light, or sound.

Some chemical reactions can produce explosions, which happen when large amounts of energy are suddenly released. Explosions can be caused by a rapid increase in temperature or pressure, or the formation of highly reactive compounds. For example, when certain chemicals used in fireworks are heated or ignited, they undergo a series of rapid chemical reactions that release energy in the form of light and heat, resulting in the colorful explosions we see in the sky.

Chemical reactions are essential to many natural and human-made processes, from the metabolism of food in our bodies to the production of energy in power plants. Understanding how chemical reactions occur and how to control them is crucial for many fields of science and technology.