Mixing is a physical change.
physical
It is a physical change because the chemical composition of salt and water do not change. You can separate the salt and water physically by allowing the water to evaporate, which leaves the salt.
This is a physical change. You can separate the salt and water by the physical process of distillation or evaporation where the water is boiled away and the salt is left behind.
Dissolution, meaning dissolving into a liquid form. It is a chemical reaction that begins with water covering a corner of the salt. The corner chlorine starts to leave the crystal and water bonds form. As the chlorine leaves more water molecules are left behind. The chlorine becomes fully solvated then the salt does the same.
Dissolving salt in water is an example of a physical change. Although the ions of sodium and chlorine separate when the salt dissolves, no chemical reaction takes place.
The salt dissolves in the water and the sand does not.
Physical. It is a mixture of salt and water. No chemical change has taken place.
physical
Physical
Salt water is a solution, a mixture not a "separation".
Solubilization of salt in water is a physical change.
Solubilization of salt in water is a physical change.
It is a physical change because the chemical composition of salt and water do not change. You can separate the salt and water physically by allowing the water to evaporate, which leaves the salt.
This is a physical change. You can separate the salt and water by the physical process of distillation or evaporation where the water is boiled away and the salt is left behind.
Physical change...
It is a physical change because the chemical composition of the salt and water does not change.
Dissolving in water is a physical change.