properties+and+shapes

=__//**Properties and shapes. **//__=



 __Properties__. - The materials are raw materials processed, elements or chemicals compounds with some property.

- Material Classification: · Stone material: comes from the natural stones: Marble, granite. · Ceramic material: Mixture between sand, clay or oxides: glass, bricks. · Composites material: Mixture between sand, water,stones… : Mortar, concrete. · Metallic material: comes from the minerals: iron, steel

- Properties classification: · Physical : · Mechanical: elasticity, plasticity, hardness, tenacity, fragility. · Thermal: fusibility, weldability, dilatation. · Optical: opaque, transparent, translucent. · Chemical: oxidation. · Ecological: recyclable, toxic, biodegradable, renewable.

__Shapes__. - A shape is the quality of a distinct object or body in having an external surface or outline of specific form or figure.

- Kinds of shapes: · Basic (2D): circle, triangles, square and rectangule. · Solids (3D): sphere, pyramid, cube and cylindre.