*urgent*

substances dissolve through three processes:

i. ionization

ii. dissociation

iii. dispersion

which lists the dissolving processes that change the identity of a substance?

a) ii and iii
b) i
c) i and ii
d) i and iii
e) i, ii, and iii

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.