Question

we say that water is formed when hydrogen and oxygen combine and gives water
but we also say that the mixture of hydrogen and oxygen is an explosive and when hydrogen react with oxygen there is an explosion? Why?
What is different in them please explain me briefly. As in both reaction hydrogen and oxygen combines but output is different?? Please tell me as tomorrow I am having exam of CHEMISTRY

Answer 1

This is because heat is released when they combine
Not sure!!

Answer 2

If hydrogen and oxygen are mixed together at room temperature, nothing happens. ... Some oxygen and hydrogen atoms combine to form water molecules, releasing a large amount of energy. This energy speeds up more molecules, breaking more bonds and allowing more atoms to react, resulting in the explosion.