With the help of your grown up and the three items listed below, you will be able to to make your own glass fireworks...
You will need:
- Food colouring
- Warm water
- Oil (vegetable, olive, peanut – any will work)
- A Glass
What to do...
Fill a glass 3/4 of the way to the top with warm water
In a separate glass add a few table spoons of oil and add 4 drops of food colouring – of differing colour
Using a fork, give the oil and food colouring mixture a good mix to break up the ‘colour beads’ into smaller ones
Carefully pour the oil & food colouring mixture into the glass of warm water and wait for the magic to happen!
How it works - The science...
Food coloring dissolves in water, but not in oil. When you stir the food coloring in the oil, you are breaking up the coloring droplets (though drops that come into contact with each other will merge… blue + red = purple). Oil is less dense than water, so the oil will float at the top of the glass. As the colored drops sink to the bottom of the oil, they mix with the water. The colour diffuses outwards as the heavier colored drop falls to the bottom