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 the only substance that exists as a solid, liquid and gas at normal. temperatures and pressures existing at the Earth's surface. It has a high specific heat, i.e. it. requires considerable energy to change its temperature. As water cools from 4Â°C to 0Â°C, its. density decreases, i.e., it expands. And water has a high latent heat of vaporization, i.e.; it. required considerable energy to change it from its liquid to its gaseous phase. This latent heat. energy is released when water vapor condenses its liquid phase.