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How to Make Saltwater Crystals

When salt water collects in a small area, it can form salt water crystals. This project will not form results overnight. The process of making salt water crystals lasts about three weeks. It is a project that is easy to do and fun to observe.

Things You'll Need

1/2 cup non-iodized salt
Pencil
String
Jar

Instructions

- 1
  Fill up a jar halfway with tap water. Use a jar that has a wide opening.
- 2
  Pour 1/2 cup of non-iodized salt into a cup.
- 3
  Spoon out 1 tbsp. of salt from the bowl into the jar and stir it into the water until it dissolves.
- 4
  Repeat this process of spooning salt from the bowl to the jar until the salt will no longer mix into the water.
- 5
  Tie a long string around the center of a pencil.
- 6
  Place the pencil so it rests across the opening of the jar. Let the string hang down into the jar.
- 7
  Adjust the string so it stops just before the water.
- 8
  Place the jar in an area where it won't be disturbed and observe the formation of salt water crystals on the string over the next three weeks.

Rocks & Minerals