Molecular formation refers to the process by which atoms bond together to create molecules. Atoms, the basic building blocks of matter, can combine through different types of chemical bonds, such as covalent or ionic bonds. In covalent bonding, atoms share electrons, while in ionic bonding, one atom transfers electrons to another. This interaction leads to the creation of stable structures that make up various substances. The arrangement and types of atoms in a molecule determine its properties and behavior. For example, the molecule water (H₂O) consists of two hydrogen atoms and one oxygen atom, giving it unique characteristics essential for life. Understanding molecular formation is crucial in fields like chemistry and biochemistry, as it helps explain how different substances interact and react with one another.