Molecular models are visual representations of molecules that help scientists understand their structure and behavior. These models can be physical, using materials like balls and sticks to represent atoms and bonds, or digital, created using computer software. They illustrate how atoms are arranged and how they interact with one another. Molecular models are essential in fields like chemistry and biochemistry, as they aid in predicting the properties of substances. By studying these models, researchers can explore concepts such as chemical reactions, molecular geometry, and the behavior of biomolecules like proteins and DNA.