The most important are the chlorides of sodium, potassium, magnesium, calcium.
Water that contains salt is salt water. it contains salt and minerals.
The best type of water softening salt to use for effective water softening is typically either solar salt or evaporated salt. These types of salt are purer and dissolve more easily, making them more efficient at removing minerals that cause water hardness.
salt
not all of them
Rock Salt
The reason why salt cannot disolve in water , is because salt is a mineral, and minerals do not disolve in water.
Salt
The rocks on the shore of the ocean are filled with minerals and with every wave that comes in it brings minerals out. AKA Salt.
The minerals precipitate out of the solution. This is one of the methods of obtaining salt - large shallow pieces of land are filled with seawater. When the water evaporates it leaves salt and other minerals (such as calcium) at the base of the land.
Halite is a type of sedimentary rock that is composed primarily of the mineral halite, which is also known as rock salt. It forms when salty water evaporates, leaving behind deposits of salt minerals.
Salt beds.
Mixture (in addition to being a mixture of salt and water, theres a bunch of other goodies floating around in it)