Why water in the cup can burn after you put batteries into the cup for a few hours?

Question

Why water in the cup can burn after you put batteries into the cup for a few hours?

Answer 1

I think its because the atom from the battery diffuse into the water when they meet , and the battery atoms are charged so can heat up therfore could be lit on fire

Answer 2

it has to do with the diffusion of the acid inside of the battery.

Answer 3

Its known as electrolysis. The two batteries establish a current through the water. An electrical current is the movement of electrons. Some of those electrons collide with the H2O molecules and separate the oxygen and hydrogens. Hydrogen and oxygen as gasses mix with the water so when enough heat is applied the hydrogen and oxygen begin to combust into water vapor.

Answer 4

its because the possitive and negative in the batteries attract hydrogen from water, which is hydrogen fuel.

Answer 5

A current that is strong enough can break water down into hydrogen and oxygen, and that's a volatile combination. Hydrogen burns fiercely in the presence of oxygen.

Answer 6

Water cannot burn. If it is burning it isn't water.

Answer 7

Some electrolysis of the water takes place and Hydrogen and Oxygen gases are produced.

This mixture can be ignited on the surface of the water.

Of course, the water itself WILL NOT burn.

Answer 8

The acid in the battery leaks in water and poisons / heats the water. I don't know why you would do that anyway.