Question

Heating of Iodine is a _______ change.

Answer 1

Hint: Iodine is a mineral that is required for thyroid hormone development. Iodine is not produced by the liver, but it must be obtained from the diet. Iodine can be used in a variety of foods. You can't produce enough thyroid hormone if you don't have enough iodine in your body.

Complete answer:
Iodine is a chemical element with atomic number 53 and the symbol $I$. At normal conditions, it occurs as a lustrous, purple-black non-metallic solid that melts to form a deep violet liquid at 114 degrees Celsius and boils to form a violet gas at 184 degrees Celsius.
Physical change:
Physical changes alter a chemical substance's appearance but not its chemical composition. Physical modifications may be used to isolate mixtures into their constituent compounds, but not to separate compounds into chemical elements or simplified compounds.
Chemical change:
Chemical changes occur when a substance mixes with another to create a new substance, a process known as chemical synthesis, or when a substance decomposes into two or three distinct substances, a process known as chemical decomposition. These mechanisms are known as chemical reactions, and they are generally irreversible unless they are followed by more chemical reactions.
Heating of Iodine:
Heating of iodine is a physical change.
This is because,
Despite the fact that a substance's molecules are rearranged as it undergoes a physical transition, its structure remains the same. It is a transient transition that only influences physical properties such as form and scale.
A physical transition requires little or no energy absorption.
There is no energy produced in this process, and no new material is created.
The initial material will be restored if the physical alteration is readily reversible.
The heating of iodine crystals is not a chemical reaction so no chemical transition occurs.
Since the heat consumed when the solid iodine transitions to vapour is given out when the vapour changes back to solid, there is no energy (heat) involved.

Note:
Physical changes alter a chemical substance's appearance but not its chemical composition. Physical modifications may be used to isolate mixtures into their constituent compounds, but not to separate compounds into chemical elements or simplified compounds.