What is pharoahs snake?

Pharaoh's Snake (also known as Pharaoh's Serpent or Black Snake) is a type of chemical reaction that produces an expanding snake-like column of ash. The reaction involves the heating of a mixture of ammonium nitrate and a powdered metal (usually zinc or iron) on a heat-resistant surface such as sand or ceramic.

As heat is applied, the mixture decomposes into nitrogen gas, water vapor, and metal oxide particles that combine to form the snake-like ash column. The reaction is exothermic, meaning it releases heat, and can reach temperatures of up to 1,600 degrees Celsius.

The name "Pharaoh's Snake" comes from the snake-like appearance and its popularity in ancient Egypt as a form of entertainment. However, the reaction can be dangerous due to the release of toxic gases such as nitrogen oxides, and should only be performed by trained professionals in a well-ventilated area.