Covalent hydrides are chemical compounds formed when hydrogen bonds with nonmetals through covalent bonds. In these compounds, hydrogen shares its electron with another atom, creating a stable molecule. Common examples include water (H₂O) and ammonia (NH₃), where hydrogen is covalently bonded to oxygen and nitrogen, respectively. These hydrides can vary in properties, such as polarity and boiling points, depending on the nonmetal involved. Covalent hydrides are typically gases or liquids at room temperature and can participate in various chemical reactions, making them important in both organic and inorganic chemistry.