Separation of mixtures

[Thesciencemaster1123]

A salt, water and food colouring is mixed together. Would evaporating turn the food colouring away?

[cvionis]

Hello Thesciencemaster1123,

In many instances, the food coloring is not evaporated with the water. This is due to the fact that the dye's molecules possess stronger bonds than those of the water; it takes a much higher temperature for the food coloring's molecular bonds to break in comparison to that required to break the bonds between water molecules. (Water evaporates when the hydrogen bonds joining its molecules together break, as a result of the molecules' absorbing of energy.)

However, there are also cases in which the food coloring is evaporated. In short, it simply depends on which type of food coloring you use.

I hope that this helps; if you have any other questions, please let me know.

cvionis

[Thesciencemaster1123]

Thank you