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Name: Megan
Status: Student
Grade: 9-12
Location: PA
Country: N/A
Date: September 2005


Question:
It all depends upon what substance(s) the impurities is(are), and what the concentration(s) is(are). Some impurities "fit" right into the growing crystal lattice, while others are either excluded, or alter the growth pattern of the crystal. Generalizations are difficult to make.



Replies:
It all depends upon what substance(s) the impurities is(are), and what the concentration(s) is(are). Some impurities "fit" right into the growing crystal lattice, while others are either excluded, or alter the growth pattern of the crystal. Generalizations are difficult to make.

Vince Calder


Hi Megan!

It will depend what these impurities are and how much. If it is in a big quantity (some how) and crystallizable class they will grow like another type of crystal, or very small quantities could be included (inside) the big crystal. If both material have the same crystal characteristics maybe they could form a mixed crystal.

Any way consider that fractional crystallization is a way (process) to purify crystals with impurities.

Thanks for asking NEWTON!

Mabel
(Dr. Mabel Rodrigues)



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