Describe how molecular models might prove to be to scientist

Models show a pattern, plan, representation, or description that shows the structure or workings of something. Molecular models help scientists visualize the anatomy of a complex atom. Models are typically used to represent things that are too small to see, or too large to see. An atom is an extremely small nanometer. 

Faith xoxo

Idon't mean to be a smart alec, length of atoms' bonds is the simplest way to define it.

Answerbonded to an amino group(nh2);