What You Need:
- Salt - 1/2 cup
- A spoon for stirring
- Toothpicks - 2
- Fill the jar with water.
- Add 1/2 cup of salt to the water.
- Mix the solution together with a spoon.
- Cut a piece of string with scissors and tie each end to a toothpick.
- Place the string over the top of the jar so that the string dangles into the middle of the solution and the toothpicks hang over the edge. Leave the experiment and wait for salt crystals to form along the string. These crystals are excellent examples of cubic crystals.
Crystals can be found grouped together as lots of small crystals or as huge individual crystals. They vary in size from a few micrometres to many metres!