The type of element that make up a substance (chemical formula)
Atomic composition
The way the atoms the atoms and bonds are arranged in a molecule
Chemical structure
The connection between atoms
Chemical bond
A representative of atoms and bonds
Model
2 or more atoms held together by chemical bonds
Molecules
Small molecules in a repeating pattern
Polymer
Repeating subunits of atoms and molecules
Extended structure
Repeating subunits in a 3 dimensional patterns
Crystal