How Does Dynamite Work?

Dynamite is basically a chemical explosive and so if ignited it catches fire really rapidly and explodes in great force thus causing a huge amount of hot gas in return.
Gasoline is a kind of explosive and it comprises of hydrogen and carbon atoms in chains. If you set fire to an amount of gasoline, it burns tremendously quickly. The hot, increasing gas creates an increasing pressure wave that can blow substances separately.
Dynamite is some kind of spongy textile, which is drenched in nitro-glycerine. The spongy stuff makes the nitro-glycerine much steadier. You usually use a blasting restricts to explode dynamite -- a blasting restrict creates a small flare-up that triggers the bigger flare-up in the dynamite itself.