Rainbow In A Glass (Creative Chemistry Experiments)

You will need:

1. Sugar
2. Warm water
3. Food colours–red,
   yellow, green and
   blue
4. 5 glasses
5. Tablespoon

The same principles of density applied in the density column come into play here as well. However, for this experiment you will change the density of water so as to make it lighter or heavier.

INSTRUCTIONS

l. Line up 4 glasses and pour 3-4 tablespoonfuls of warm water into each glass.

2. In the first glass dissolve, 1 tablespoonful of sugar. In the second glass, dissolve 2 tablespoonfuls of sugar.
3. In the third and the fourth glass dissolve 3 and 4 tablespoonfuls of sugar each.
4. In the first glass which has 1 tablespoonful of sugar dissolved, put a few drops of red food colour.
5. In the second glass, put a few drops of yellow, in the third put a few drops of green and finally in the fourth put a few drops of blue.
6. Wait for 10 minutes while the mixtures cool down completely.
7. Among the four glasses the blue glass with 4 tablespoonfuls of sugar has the maximum density.
8. Take the fifth empty glass and pour the coloured water in reverse order – starting with blue water and ending with red.
9. However, be careful and pour the water extremely slowly, preferably with a dropper or spoon so that
   it may not mix.

RESULT

A rainbow coloured density column is prepared, as each potion of water has a different density due to the varying sucrose-content in it.