Question

Why are chemical changes
are called permanent
changes ?​

Answer 1

Answer:

Permanent in nature. Since the original composition of the substance changes, one or more new substances are formed. ... A chemical change is generally irreversible.

Chemical reactions always result in forming new substances with different molecules. It is not easy to get back the original substances. Hence, the chemical changes are permanent and irreversible.

Answer 2

Explanation:

Chemical change are called parmanent change because it cannot be undo