This activity and more salt science experiments can be found in an salt science activity sheet made as part of a collaboration with the primary science teaching.
Table salt crystals.
Iodized salt won t work as well but will still form crystals.
You can see the shape of a salt crystal under a microscope and you can grow your own salt crystals for fun or for a science fair.
Table salt takes a few days to grow.
We also made coloured salt by adding a little food colouring.
Table salt also known as sodium chloride is a crystal a symmetrical solid substance made entirely of the same material.
Salt in its natural form as a crystalline mineral is known as rock salt or halite salt is present in vast quantities in seawater where it is the main mineral constituent the open ocean has about 35 grams 1 2 oz of solids per liter of sea water a salinity of 3 5.
Alum grow quickly sometimes making visible crystals within a few hours.
Buy it at a pharmacy.