Question

why is boiling an egg a chemical change? it is a process that cannot be reversed. this process produced bubbles. the process could be undone.

Explanation:

A chemical change is a non - reversible process where new substances are formed. When an egg is boiled, the proteins in the egg undergo denaturation, a chemical change that cannot be undone. Bubbles during boiling are a physical change related to gas release from water and not the defining characteristic of the egg - boiling chemical change.

Answer:

It is a process that cannot be reversed.