Answer:
A strong acid IONIZES COMPLETELY when dissolved in water.
Step-by-step explanation:
An acid is said to be a strong acid when on dissolving in water is completely ionized into its proton and conjugate base.
The strength of an acid is determined by the ease in which an acid releases it's proton. Strong acids produces weak conjugate bases and are useful in accelerating some certain chemical reactions and causes chemical burns when exposed to it.