Saturday, June 27, 2009
School Holiday Boredom Buster - Salt Crystals
School holidays are back!!! So I thought I'd share these holidays a few school holiday boredom busters.
Today is growing salt crystals.
You will need:
*A clean jar
*String (I tend to prefer brown string)
*A bolt or something to use as a weight
*1 - 2 cups of boiling water
*1-2 cups of table salt (another variation is to use sugar)
*A couple of drops of food colouring (optional).
Boil water and place into your clean jar. Then pour in enough salt so that you only have only a tiny amount of undisolved salt crystals at the bottom of the jar that will not dissolve.
Tie your string to the middle of your pencil and tie your weight to the end of the string ensuring that your string is short enough that it dosn't reach the bottom of your jar.
Leave the string dangling in the solution overnight, the next day you will notice some small crystals, replace the string in water and over the next few days you will notice the crystals will grow. If you would like larger crystals it is necessary to replace the salt solution daily.
Posted by Amanda W at 2:13 PM