Both types of this dye come from synthetic colors (which is why you should stay away from eating too much food coloring).

Students will realize that by using a combination of results from two tests, they can successfully identify an unknown liquid. Students will also add water and salt water to green food coloring on a ...

Students place drops of each liquid on the surface of a zip-closing plastic bag and see that the liquids look and act differently. Students tilt the bag and see that the liquids move down the plastic ...