Answer:
B) IONIZATION
Explanation:
Ionization occur when substance gain or lost the electron and form the ions.
when substance are changed into ions their identity changed.
So we can say that it is a chemical change and substance lost their identity.
For example:
The polar covalent compound HCl ionized and gives H⁺ and Cl⁻ ions. These ions have different properties from parent compound HCl.
While in case of dissociation identity remain same. Consider the dissociation of ionic compound they just dissociate into respective ions . This is a physical change and identity of substance remain same.
For example:
Ionic compound sodium chloride dissociate into sodium(Na⁺) cation and chloride(Cl⁻) anion.
while in case dispersion particles are dispersed into continuous phase without losing their identity.