Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Water is a combination of hydrogen and oxygen. How would you prove that water is a pure substance and not a mixture?

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> i) The properties of water are entirely different from those of its constituents, hydrogen, and oxygen.
ii) Hydrogen and oxygen combine in a fixed ratio to form water (2:1).
iii) Hydrogen and oxygen cannot be obtained back from water by a physical process.