write any two method of preparation of crystal in laboratory
Answers
Answer:
Crystallisation process results in a physical change in objects. It leads to the formation of crystal structures. Clear distinguish between processes of crystallisation is not possible. But we can identify two categories of crystallisation processes namely Cooling Crystallisation and Evaporative Crystallisation.
Answer:
Commonly used techniques include solvent evaporation; slow cooling of the solution, solvent/ non-solvent diffusion, vapour diffusion and sublimation and many variations on these themes. The choice of technique may be dictated by the amount of sample.
Crystals will form from a saturated solution left out on a table simply because the water evaporates away. When there is less water, less of the solid can remain dissolved. As a result, the solid begins to form crystals. These crystals may be so small that they appear to be like a fine powder.