Here's a breakdown:

* Acid: A substance that donates hydrogen ions (H+) when dissolved in water. Examples include hydrochloric acid (HCl) and sulfuric acid (H₂SO₄).

* Base: A substance that accepts hydrogen ions (H+) when dissolved in water. Examples include sodium hydroxide (NaOH) and potassium hydroxide (KOH).

When an acid and a base react, they neutralize each other, forming water (H₂O) and a salt.

Examples of Salts:

* Sodium chloride (NaCl): Formed from the reaction of hydrochloric acid (HCl) and sodium hydroxide (NaOH).

* Potassium sulfate (K₂SO₄): Formed from the reaction of sulfuric acid (H₂SO₄) and potassium hydroxide (KOH).

* Calcium carbonate (CaCO₃): Formed from the reaction of carbonic acid (H₂CO₃) and calcium hydroxide (Ca(OH)₂).

Key Characteristics of Salts:

* They are usually ionic compounds, meaning they are made up of positively charged ions (cations) and negatively charged ions (anions).

* They are typically crystalline solids at room temperature.

* They can dissolve in water, forming solutions that conduct electricity.

Note: There are also some exceptions to this definition, such as organic salts which may not involve a traditional acid-base reaction.