Something Boiling In A Pot Is An Example Of Convection
It is A Liquid not A solid.
Anions are basically atoms that carry a negative charge. A negative charge indicates that the atom has gained electrons . Atoms that gain electrons are nonmetals in group 6,7,8 since they lack a full stable outer shell so when they gain electrons they will form anions which as i mentioned previously are atoms with a negative charge.
First, you mix the salt and sand with water, so the salt dissolves. Next, you filter the sand out, so you have the slat water and sand separated. Then, you evaporate the water, leaving the salt behind.