Question

What is formation of steam from boiling water called?
Reversible change
Irreversible change
Chemical change
None of the above​

Answer 1

• The formation of steam from boiling water called reversible change.
• A change which can be reversed to form original substance is called a reversible change.
• When we boil water by heating, then it changes into steam. Now, if we cool the steam , then water is formed again.
• So , the changing of water into steam has been reversed by cooling. Thus, the boiling of water is a reversible change.

                                   Water  ------------> Steam

                                             ( Liquid) < ------------

• Boiling of water forms steam which can be further condensed to form water again, thus this change is a temporary and reversible change.
• During boiling water forms steam and thus there is no new substance formation. The chemical composition  and properties of the original substances is not changed.