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Alum Crystal

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About BL 2

The difference in getting the crystals to be colored-- In the first version the color and alum was added and then the mixture was boiled. The second version the alum and color are added after the water is boiled.

If you add food coloring to this version you may only get a hint of color if any at all.

3tsp alum

6tblsp (3 oz) water

Measuring spoon / cup

Baby food jar

Microwave

 

 

~~Boil water in measuring cup

~~Pour into baby food jar

~~Add alum

~~Stir until dissolved

~~Place the jar where it will not be disturbed

~~Let sit for 3 – 5 days

~~Gently remove the crystal

~~Let dry

 

*Hint

To make a larger crystal--- use the crystal from your first jar

 

~~Boil water in measuring cup

~~Pour into baby food jar

~~Add alum

~~Stir until dissolved

~~Add crystal (pre-made from above)

~~Let sit for 3 – 5 days

~~Gently remove the crystal

~~Let dry

This recipe “should” give you colored crystals

 

1/2 c Alum (found with the spices at grocery stores)

1/4 c Water

Measuring spoon / cup

Baby food jars

Food coloring (optional)

 

~~Pour water into a measuring cup (bowl)

~~Add alum a little at a time

~~Add food coloring to desired color

~~Stir mixture

~~Boil mixture in microwave

~~Remove from microwave

~~Stir again to make sure all of alum is dissolved

 

*Hint

To make a super saturated solution after heating try to add more alum until no more will dissolve.

The more alum that dissolves the bigger the crystal will be

 

~~Cool for about 2 minuets

~~Pour into jars

~~Place jars where they will not be disturbed

~~Let sit for 3 - 5 days

 

*Hint

The longer you let the solution sit undisturbed the bigger your crystal should be

 

~~After 3 – 5 days gently remove crystals from jars

~~Place them on a paper towel to dry

~~When dry look at them under a magnifying glass

~~Are they all the same?

 

*Hint

These crystals may dissolve after a time if allowed to get wet(and stay wet) unless you use it as a seed crystal (to grow a bigger crystal)

Copyright 2006 Brighteyes Learning
Copyright 2005 Brighteyes Learning

 

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