When you have a cube made of any matter plastic, iron ,wood it is made of millions of atoms. But those atoms are held tight in the same shape. Why don't the atoms just fall away from each other and change in to a very fine dust of molecules. What holds all these different elements together? I would think electric forces but there is both + and - so they cancel each other out and there is no attraction force anymore. I know that molecules are are hold by different charges of the atoms, but I learned in school that the other kind of molecules is not hold together by different charges?? than what holds them together. And what holds solid matter together, what force?