A molecular model is a visual representation of molecules, which are groups of atoms bonded together. These models help scientists and students understand the structure, shape, and behavior of different substances at the molecular level. They can be made from various materials, such as plastic or wood, and can represent simple molecules like water or complex ones like proteins. Molecular models can be used in chemistry and biology to illustrate concepts like chemical bonding and molecular interactions. They are essential tools in research and education, allowing for a better grasp of how molecules interact in processes like photosynthesis or drug design.