HESI A2 Science Practice Test 2025 - Free Practice Questions and Study Guide

Ammonia is a compound composed of one nitrogen atom and three hydrogen atoms. Its chemical formula is represented as NH3, which highlights that there are three hydrogen atoms bonded to a single nitrogen atom. This structure gives ammonia its characteristic properties, such as its basicity and its role as a building block for the synthesis of various nitrogen-containing compounds. Understanding the molecular composition is crucial for studying its behavior in chemical reactions and its applications in various fields, including agriculture and refrigeration.