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| | Mixtures and Solutions: Growing crystals of alum |
 | | However, when the last bits of liquid evaporate, they deposit tiny crystals all over the large crystals, which will make the large crystals less attractive as seeds (that is, when such crystals are used as seeds, the tiny crystals will grow and make the final crystal less visually appealing). |
 | | To grow bigger crystals, the whole process could be repeated, using this crystal as a seed crystal. |
 | | As a side note, during the times we were letting crystals grow (seed crystals or the final crystal), we always covered the container loosely with aluminum foil to prevent dust from settling in the container. |
| www.princeton.edu /~pccm/outreach/scsp/mixturesandsolutions/activities/growingcrystals.htm (1238 words) |
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