* An acid: A substance that produces hydrogen ions (H+) in solution. Common examples include hydrochloric acid (HCl), sulfuric acid (H2SO4), and acetic acid (CH3COOH).

* A base: A substance that produces hydroxide ions (OH-) in solution. Common examples include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2).

The neutralization reaction occurs when an acid and a base react with each other to form salt and water.

Here's a simplified equation representing the reaction:

Acid + Base → Salt + Water

For example:

HCl (acid) + NaOH (base) → NaCl (salt) + H2O (water)

In this specific example, the salt formed is sodium chloride, commonly known as table salt.