1. Allow layers to separate. 2. Add a few drops of water to each layer. 3. If the layer is water, then the drops of added water will dissolve and increase the volume of the aqueous layer. 4. If the layer is organic, then the drops of added water will form droplets or a new layer. Solution 1. Allow layers to separate. 2. Add a few drops of water to each layer. 3. If the layer is water, then the drops of added water will dissolve and increase the volume of the aqueous layer. 4. If the layer is organic, then the drops of added water will form droplets or a new layer..