Grow your own stalactites and stalagmites
 
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Remember, use rubber gloves for this activity.
You will need:

- 2 large jars
- 1 saucer
- a piece of wool
- 2 paper clips
- hot water
- Baking Soda (Sodium Bicarbonate)

Grow your own stalactites and stalagmites. Image from http://www.nps.gov/ozar/forteachers/growown.htm


Method:
1-
Add Baking Soda (Sodium Bicarbonate) 2 large jars almost full of warm water until no more will dissolve.

2 - Place a piece of wool, between the jars, with the ends in the solutions (weight the ends with a small nut or a paper clip).

3 - Place a saucer between the jars and leave for a few days.

The solution will seep up and along the wool and drip on to the saucer. Each drip leaves behind a little baking soda and so forms a stalactite. As the water evaporates from the drips collecting on the saucer, a stalagmite forms.


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