1. PYPChem: Oobleck Investigation
Spedding Grde 5 PYP The International chool of Monterey
Dirctions for Mixing Oobleck
1. Be sure to work cleanly. Oobleck is VERY messy. Please, allow only one person to
mix the ingredients. KEEP THE OOBLECK OFF THE FLOOR!
2. Begin with 1 ½ cps of water in your plastic tub.
3. Add a few drops of food coloring.
4. Add cornstarch to the mixture, a few spoonfuls at a time. Stir thoroughly.
5. It will take 5-10 minutes for the oobleck to form. You must continue stirring and
adding cornstarch a spoonful at a time.
6. Eventually you’ll need one of your tablemates to stir the mixture with their hands
(it gets pretty thick)
OBSERVATIONS
PHYSICAL PROPERTIES
With the oobleck still in the container, walk your fingers across the surface of the
substance, as if you were walking across a swimming pool. What do you observe?
Does oobleck behave like a solid, a liquid, or a gas. Explain.
With the oobleck still in the container, lightly punch the substance. What do you
observe? Does oobleck behave like a solid, a liquid, or a gas. Explain.
Take turns holding the oobleck in yor hand. What does it do? Is it behaving like a
solid, a liquid, or a gas? Explain in detail.

2. What else do you observe about ooblec that makes it an unusual material?
DURING THE MEDIA
Record notes below.

3. AFTER THE MEDIA
Based upon what you learned from the media, what are the unique physical
properties of oobleck?

4. What questions do you have about oobleck? List at least 5.