Rainbow in a Jar

This activity is ideal elementary school students!

This activity is a great way to teach your student about density, and the different densities of liquids! In this activity, you'll stack liquids of different densities to make a super awesome rainbow in a jar!

Materials:

* A tall, see-through container (like a mason jar)

* Honey

* Light corn syrup

* Dish soap (either blue like Dawn or green like Palmolive)

* Olive oil

* Rubbing alcohol

* Water

* Food coloring

* A dropper

Directions: First, you'll want to add food coloring to your corn syrup, water, and rubbing alcohol. It's recommended to dye the corn syrup purple, the water green or blue (whichever color your dish soap is not), and the rubbing alcohol red, but you can get creative!

Pour a layer of honey in the jar being careful not to touch the edges.

Next, pour a layer of corn syrup, again being careful to pour down the center.

Then, pour a layer of dish soap.

Next, pour a layer or water.

Then, pour a layer of olive oil. It's ideal to have a thicker layer of olive oil to make the final layer easier.

Finally, use the dropper the place the rubbing alcohol layer. Pouring the rubbing alcohol is not recommended as it may break through and mix with the blue/green water.

Admire your rainbow jar! Be careful not to shake it, while the different densities will separate the dyes will mix together.

Idea by: Plato's Blog