Tuesday, July 8, 2014

Make Your Own Geodes--Fun Activity for Kids



Are you looking for a fun, easy activity for your kids this summer?  Why not make geodes?  A geode is a rock with a surprise inside.  They are partially hollow inside and lined with sparkling mineral crystals.  In nature, it is thought to take hundreds of millions of years to create.  However, these imitation geodes will just take a week.

Make your own geodes

The directions are really pretty easy.  You will need these basic supplies:

  • Borax
  • Saucepan
  • 2 cups of water
  • Eggs (as many as you want to make)
  • Food coloring


First, crack each egg near the narrow end and remove a small portion of the shell at the top of the egg.



Pour out the contents of the egg and discard.







Next, add 2 cups of water into a saucepan, add food coloring of your choice, and then mix together.  Add Borax soap to the water until the water is well saturated with Borax (probably about 1 cup or more).  Bring the mixture to a boil, remove from heat. (If you want to use multiple colors, divide the Borax water and then add the food coloring after boiling.)


 Pour the water mixture into each egg.


 Allow the water to evaporate over a few days to a week.  All the water may not evaporate.  If this is the case, pour the extra water from the shell.  Let your kids crack the shells open to find their geodes.



The Science Behind The Experiment:
As the water evaporates from the eggs, Borax crystals deposit on the sides of the eggs creating geode eggs. The geode egg is very similar to an actual geode. 

3 comments:

Becky Lyons Borgia said...

These look like fun. Great science project for our homeschool.

Stay at home mom said...

Just wondering if you could list an amount of Borax to use? Like 2 cups, 3 cups? Would like to make these with my kids but would LOVE an amount. I am not a good guesser with recipes...

Thank you!

Stay at home mom said...

Just wondering if you could list an amount of Borax to use? Like 2 cups, 3 cups? Would like to make these with my kids but would LOVE an amount. I am not a good guesser with recipes...

Thank you!

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