I remember when I was in junior school we learnt how to make crystals. The set up so easy and it was the topic of conversation over the course of the week as we all watched the crystals form and seemingly grow before out eyes.
To make crystals all you need is -
* 2 x jars or glasses
* String or wool (as long as your arm)
* 2 x paper clips
* Very warm water
* Bi-Carb soda or baking soda
* Spoon
1. Begin by filling the glasses with warm water and stirring a teaspoon of Bi-Carb soda into each. Continue to add teaspoons on Bi-Carb soda until it will not dissolve any more.
2. Slide a paper clip onto each end of the piece of wool or string. Don't wrap it around the paper clip (as shown) as it will struggle to sink. Just slide it on so that it acts as a weight and keeps it in place.
3. Set everything up as shown above. Be sure to have the string sag in the middle and a tray of some kind ready to catch any drips. The string will soak up the liquid and begin making crystals over a period of a week.
This is what it will look like after a week!
If you follow this method of making crystals you will possibly find that the glasses themselves develop crystals. Don't worry, Bi-Carb soda will not cause any damage. These glasses washed up bright and sparkling from the Bi-Carb soda.
Why does this happen?
The wool soaks up the liquid and once the water evaporates all that is left is the crystals from the Bi-Carb soda. I think it's pretty cool and a great way to make daily observations.
And that's how you make crystals. :)
Kate x
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