
|


Model of a water molecule (H2O)
|
Atoms are the building blocks of matter, and they combine to make molecules. Molecules are so small that it is nearly impossible to take a picture of them, even with very powerful microscopes. But scientists know how to make models of molecules, and the models help scientists study how molecules interact.

DNA molecular model
|
Molecules can be represented by simple spheres (atoms) joined by cylinders (atomic bonds). This type of model can represent a simple molecule, like water, or a very complex molecule, such as DNA.
|

|