* Electrolytes are substances that conduct electricity when dissolved in water. This happens because they produce ions (charged particles) in solution.

* Strong electrolytes ionize completely in solution, meaning they break apart into ions almost entirely.

* Weak electrolytes only ionize partially in solution. They exist in a mixture of ionized and non-ionized forms.

Acetic acid (CH₃COOH) is a weak acid. When dissolved in water, it only partially ionizes to form hydronium ions (H₃O⁺) and acetate ions (CH₃COO⁻):

CH₃COOH (aq) + H₂O (l) ⇌ H₃O⁺ (aq) + CH₃COO⁻ (aq)

Since it doesn't ionize completely, it doesn't conduct electricity as well as a strong electrolyte like hydrochloric acid (HCl).