Evaporation Painting

Suggested Grades



Students will see the the effects of evaporation through painting with salt water.


  • 1/4 cup salt
  • paper for painting on
  • containers for paint
  • 1/4 cup warm water
  • paint brushes
  • food colouring
  • measuring cups


  • Measure the salt into a container.
  • Add the warm water to the salt.
  • Add several drops of food coloring to the mixture. (make more of the mixture if you would like more colours, or split this mixture into separate containers for more colours)
  • Paint a picture with the mixture.
  • Let the paintings to dry overnight.
  • (The water will evaporate from the painting and the colored salt will stay on the paper)
  • Have a class discussion on what happened to their paintings. Think of some reasons why this might have happened.