Gears make a clock tell time.

Letters of the alphabet make words.

Steel beams make different kinds of buildings.

Grains of sand come together to create a large beach.

Their increase in size makes them visible to the human eye.

The atoms create a more complex particle called a molecule.

The atoms become a single atom depending on which one is stronger.

They undergo a process that causes the to make copies of themselves.

All molecules have equally strong bonds.

A molecule is composted of at least two atoms.

All molecules are too small to be seen without aid.

A molecule forms after two atoms create a chemical bond.

Scientists have no other way to see molecules

It is the only way they can provide proof for their work.

It makes important aspects of the molecule easier to see.

It is the only way they can figure out how to combine atoms

2D line-angle formulas

3D computer representations

3D ball-and-stick models

2D laffer curve model