Water electrolysis produces hydrogen and oxygen, indicating that water contains hydrogen and oxygen molecules.

Water electrolysis produces hydrogen and oxygen, indicating that water contains hydrogen and oxygen molecules.

No. The composition of water is hydrogen (H) and oxygen (O). The hydrogen molecule is H2, the oxygen molecule is O2, so that's not right.

No, the composition of water is hydrogen (H) and oxygen (O), the hydrogen molecule is H2, the oxygen molecule is O2, so no.

No, the composition of water is hydrogen element (H) and oxygen element (O), the hydrogen molecule is H2, the oxygen molecule is O2, so no.

The following statements are true () A. Water electrolysis produces hydrogen and oxygen, indicating that the water contains hydrogen and oxygen molecules B. The nature of the substance as it changes is the chemical nature of the substance C. Evaporation and electrolysis of water produce gases, which are chemical changes D. In the reaction of water electrolysis, neither hydrogen atom nor oxygen atom changes The following statements are true () A. Water electrolysis produces hydrogen and oxygen, indicating that the water contains hydrogen and oxygen molecules B. The nature of matter as it changes is the chemical nature of the matter C. Evaporation and electrolysis of water produce gases, which are chemical changes D. In the reaction of water electrolysis, neither hydrogen atom nor oxygen atom changes

A. Water contains water molecule, water contains hydrogen atom and oxygen atom, water does not contain hydrogen molecule and oxygen molecule, A error; B. The property of substance in chemical change is chemical property, so B error; C. Water evaporation does not produce new substance, it is physical change, C error; D. In the process of water electrolysis, water component...

A. Water contains water molecule, water contains hydrogen atom and oxygen atom, water does not contain hydrogen molecule and oxygen molecule, A error; B. The property of substance in chemical change is chemical property, so B error; C. Water evaporation does not produce new substance, so it is physical change, C error; D. In the process of water electrolysis,...