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The importance of ammonia in the formation of salt crystalsFeatured science projectScience project video


The results show that the solutions in Bowls 1 and 2 that contained only salt, water and bluing did not have much crystallization. The crystallization of salt increased when ammonia was added to Bowls 3 and 4. The more ammonia was added, the more crystallization occurred. 


Ingredient Observation
Bowl 1 Crystal height of 2.5mm on sponge. Some crystal on edge of owl.
Bowl 2 Crystal height of 2.8mm on sponge. Some crystal on edge of bowl.
Bowl 3 Crystal height of 5.3mm on sponge. Salt crystal grown above bowl height.
Bowl 4 Crystal height of 8.2mm on sponge. Salt crystal overflowing bowl.
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Complexity level:
Project cost ($):
Time required:
1 hour for preparation, 10 days to conduct the science fair project
Material availability:
Easily found
Safety concerns:

Handle the ammonia carefully.