Monday, June 30, 2014

Liquid Rainbow

rainbow in a jar


we found this book at the library

how to make a liquid rainbow by lori shores


you will need the following items:

1/2 cup light corn syrup
1/2 cup blue dish soap
1/2 cup water
1/2 cup olive oil
1/2 cup rubbing alcohol
3 mugs
1 quart jar
spoon
red, blue, yellow and green food coloring.

Start by pouring a 1/2 cup corn syrup into a mug.  
stir in 1 drop of blue and 1 drop of red food coloring


pour the liquid into the glass jar


next slowly pour 1/2 cup of blue dish soap into the jar


mix 2 drops of green food coloring to 1/2 cup water



tilt the jar and slowly pour the green water inside.


next, slowly pour the 1/2 cup of olive oil into the jar


in another mug, stir 2 drops of red food coloring into a 1/2 cup rubbing alcohol


tilt the jar and slowly pour in the mixture

then, stand back and take a look

do you see the rainbow?


just a bit of a warning, you really do need to stand back or across the room.
if you look at the jar close up, you won't see it as clearly.


how it works...
liquids are made up of very small particles and how tightly they are packed together 
determines the density of the liquid.

for example, the dish soap floats on top of the corn syrup, because the soap is less dense.
you slowly poured the water in so that it wouldn't mix with the soap.
water is less dense than the soap, so it floated on top, etc.

pretty cool, huh?
we thought so too.


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