what is cleavage plan ? give an example .why is cleavage an isotropic property?
Answers
Explanation:
Properties of a material depend on the direction; for example, wood. In a piece of wood, you can see lines going in one direction; this direction is referred to as "with the grain". ... Strength is a property of the wood and this property depends on the direction; thus it is anisotropic.
The cleavage planes are areas where the crystal structure is the weakest. It is only along these planes that a crystalline solid can be cut. Therefore, a cut from a sharp object would give two smooth parts. Amorphous solids do not show any cleavage planes.
Anisotropy is the property of substances to exhibit variations in physical properties along different molecular axes. ... This leads to different physical and mechanical properties in a single crystal along the different axes: examples are different electrical and thermal conductivity and light polarization.
Cleavage forms parallel to crystallographic planes:
Basal or pinacoidal cleavage occurs when there is only one cleavage plane. ...
Cubic cleavage occurs when there are three cleavage planes intersecting at 90 degrees. ...
Octahedral cleavage occurs when there are four cleavage planes in a crystal.
How do you identify cleavage?
If the crystal splits cleanly and smoothly along a flat plane the break is called cleavage. If the break does not show flat planes, we simply call it fracture.
Answer:
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