Question

1. The chemical change is permanent and (reversible/irreversible)​

Answer 1

Answer:

IRREVERSIBLE

Explanation:

Chemical Change

Permanent in nature. Since the original composition of the substance changes, one or more new substances are formed. Forms of energy, such as heat, light or electricity, may be emitted or absorbed. A chemical change is generally irreversible.

Answer 2

Answer:

All chemical changes are irreversible changes. Once the chemical properties of a substance are changed, it becomes another substance. Thus, it cannot return to its original state.