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Grow your own Crystals
Gather the Materials
cardboard (like the back of a notepad)
Trace the Shapes
pen or a pencil to draw shapes on the cardboard. Each shape should be about 4
inches tall and 2 inches wide. Also, be sure to draw a notch half way down from
the top on one shape and half way up on the other.
Cut the Shapes
Use scissors to cut out both shapes, carefully cutting out each notch.
Slide notches together and position shapes so they are perpendicular to one another.
Add Food Coloring
drop of food coloring on your cardboard.
Prepare the Solution
Prepare the growing solution in a small bowl. Mix together 2 tablespoons each of water, table salt, liquid bluing, and ammonia. Stir thoroughly, until most of the salt has dissolved. You want to saturate the growing solution.
Place in the Solution
the solution is prepared, put your cardboard in the bowl and watch as the
growing solution begins to move up into the cardboard. Place your petri dish
where it wonít be disturbed while it grows. Salt crystals are very
Watch it Grow!
start to see crystal growth in about 6 to 8 hours with your shapes looking like
this after about a full day of growth. Notice how the crystals have picked up
the color from the food coloring.
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