one thing two thing three thing four thing

Answer:

1. Solution, in chemistry, a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. The term solution is commonly applied to the liquid state of matter, but solutions of gases and solids are possible.
2. Solute is the substance that dissolves in water.
3. Solvent is the substance that dissolves the solute
4. Number four is in the picture