How to Make Density Bottle with Oil & Water

Step-by-Step Instructions

1. 1

   Begin by asking the child what they think will happen when oil and water are mixed.

2. 2

   Carefully pour approximately ½ cup of oil into a clear drinking glass.

3. 3

   Next, pour the same amount of water into the same glass.

4. 4

   Observe and discuss how the oil and water separate.

5. 5

   Explain the concept of density, using the separation as an example. Ask the child to identify which liquid is denser (the oil floats, indicating it is less dense than water).

6. 6

   Now, ask the child what they predict will happen when a single drop of water-based food coloring is added to the oil.

7. 7

   Have the child add one drop of food coloring to the oil. If the drop doesn't immediately sink through the oil, a toothpick can be used gently to encourage it to move downwards, allowing observation of its behavior as it encounters the water layer.

Frequently Asked Questions