Evaporating dish, heating pad, heating stand, Bunsen burner • 20ml of salt and water solution (50/50 W/V) •Place solution into evaporating dish •Set up apparatus as shown in diagram. Method: •Light Bunsen burner and heat solution slowly, starting with a low flame and gradually increasing the heat. •Continue heating until all liquid evaporates. •Turn off Bunsen burner. Allow residue to cool. Results & • All water evaporates. Observations: • The solution gradually turns to solid crystals. • The water in the solution reaches its boiling point and chnages state from Analysis & liquid to gas (water vapour). • NaCl is an ionic solid which has a very high boiling point as compared to water and remains in the solid state. Conclusion: • This method is only useful for separating the mixture’s components when the solvent (in this case water) is not to be retrieved at the end of the experiment. Evaporation/ crystallization