Water electrolysis produces oxygen and hydrogen, indicating that water contains both oxygen and hydrogen. Why? Water electrolyzes the formation of oxygen and hydrogen, indicating that water contains oxygen and hydrogen. Why?

Water electrolysis produces oxygen and hydrogen, indicating that water contains both oxygen and hydrogen. Why? Water electrolyzes the formation of oxygen and hydrogen, indicating that water contains oxygen and hydrogen. Why?

No, water is a substance, it's a macro concept, it's an element, it's a micro concept, it's a water molecule made up of hydrogen and oxygen.

No, water refers to matter, which belongs to macro-concept, element is also, and atom is micro-concept. It can only be said that water molecule is composed of hydrogen atom and oxygen atom. Macro-concept and micro-concept can not be mixed.

In the experiment of water electrolysis, the gas volume ratio of hydrogen and oxygen collected is about 1:2, so the molecular ratio of hydrogen and oxygen generated after water decomposition is 1:2 In the experiment of water electrolysis, the volume ratio of the collected hydrogen gas to the oxygen gas is about 1:2, ratio of hydrogen and oxygen generated after water decomposition is 1:2

The title is wrong!
In the experiment of water electrolysis, the gas volume ratio of hydrogen and oxygen collected is about 2:1, not 1:2

Of course, the molecular ratio of hydrogen to oxygen produced is 2:1

Water electrolysis 2H2O=2H2+O2

The title is wrong!
In the experiment of water electrolysis, the gas volume ratio of hydrogen and oxygen collected is about 2:1, not 1:2

Of course, the molecular ratio of hydrogen to oxygen produced is also 2:1

Water electrolysis 2H2O=2H2+O2