Texture is one of the most fundamental elements of three dimensional art. It is an element that needs to be carefully considered by sculptors. Texture is related to the material used--marble, wood, clay, bronze, brass, iron. steel, or plaster, for example-- as well as the process: casting, carving, construction, or welding. In addition to the material and the process, the final surface treatment offers even more textural possibilities. These include patination (chemically altering the surface of metal), painting, staining, bleaching, varnishing, polishing, waxing, sanding, buffing, scorching, tapping the sufrace with various tools to add texture, and using a grinder to smooth out rough textures and welding seams, among other things.
Actual texture as opposed to visual texture is the materials used to create a work of art. Actual texture is physical it's hard, cold,smooth, etc. Impasto is an actual texture technique.
The diagram shows changes of state between solid, liquid, and gas. The atoms of a substance lose energy during a change of state. ... Atoms gain energy as a solid changes to a liquid. If atoms energy during a change of state, they are pulled together by attractive forces and become more organized.