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Solids, Liquids and Gases Activity for Kids

Oobleck DIY

  • Duration: 15-30 min
  • Difficulty: Easy
  • Cost: $0 to $5

To create a mixture called Oobleck that behaves like a liquid and a solid!

Visit The Full Lesson Download Instructions as PDF

Material List

  • 12 Cups Corn starch
  • 11 Cup Water
  • 1A bowl
  • 1Measuring Cups
  • 1A spoon
  • 1Old newspaper
  • 1Towels
  • Warning:This activity can be messy.

Instructions

  • 1With the help of an adult, measure 2 cups of cornstarch and pour it into a bowl.
  • 2Next pour 1 cup of water into the bowl.
  • 3Now mix until the Oobleck forms, this could take a few minutes of mixing
  • Tip:You may need to adjust the amount of water or cornstarch slightly to get the right consistency.

How It Works

Oobleck behaves like a liquid sometimes, and a solid at other times. If the Oobleck is pressed on, it acts like a solid and feels hard. Other times it doesn’t keep its shape and behaves like a liquid. This is because when you press on the Oobleck, the water gets trapped in between the pieces of cornstarch. The harder you press, the firmer the Oobleck becomes.

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Check out the Full Lesson on Solids, Liquids and Gases

In this lesson, we learn that:

  • Matter comes in different forms: Solids, Liquids and Gases.
  • A solid keeps its shape.
  • A liquid takes the shape of its container.
  • A gas fills its container.

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