i dont know many examples of harmful or useful explosive reactions but i know one of each. for useful: using explosives for mining and the burning of gas in your car to let you drive around. for harmful: bombs.
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Combustion of fuels like gasoline, chemical reactions like the detonation of explosives, and reactions involving highly reactive elements like sodium with water are examples of explosive reactions that release large amounts of energy rapidly.
francium + water
and aluminum powder + iron oxide ---heat---> explosive reaction
different reactions during explosions
This would result in a non-explosive, "runny" eruption, similar to what you get in Hawaii, where the volcano simply pours out lava. Explosive reactions occur when rocks contain large amounts of water and silica, which flash into steam, resulting in a rapid expansion, and thus a dangerously explosive reaction.
Mount Fuji typically has non-explosive eruptions, which are characterized by the slow release of lava and volcanic gases. However, there is also some evidence of explosive eruptions occurring in the past, which have produced ash clouds and pyroclastic flows.
Some volcanoes are more destructive than others due to factors such as the type of magma composition (viscosity), presence of volatile gases, proximity to populated areas, and eruption style (explosive vs. effusive). Volcanoes with highly viscous magma tend to have more explosive eruptions, while those with runnier magma may have more frequent but less destructive eruptions. Additionally, the size and frequency of eruptions can also play a role in determining the overall destructiveness of a volcano.
Creating a loud bang in a chemical reaction typically involves reactions that release a large amount of gas or energy very quickly, such as those involving explosive materials. These reactions rapidly expand the volume of gas produced, creating a shockwave and resulting in the "bang" sound. Safety precautions should always be taken when working with explosive materials.