1 By comparison, machine shops also cut metal, but they are more concerned with the machining of parts on machine tools. 2  Firms that encompass both fab work and machining are also common. 3  Blacksmithing has always involved fabrication, although it was not always called by that name.
When water is in its solid state (ice) , the water molecules are packed close together preventing it from changing shape. Ice has a very regular pattern with the molecules rigidly apart from one another connected by the hydrogen bonds that form a crystalline lattice.
Water is a polar molecule composed of two hydrogens and one oxygen. The oxygen is slightly negative, while the hydrogens are slightly positive. The hydrogens form hydrogen bonds with the oxygen of adjacent molecules. Then, those molecules form more bonds with other adjacent water molecules.