What are 3 items you can mix together

and then they will settle into 3
different layers?

oil, water, alcohol if you add it gently.

Water, Oil, and sediment

To find three items that can be mixed together to form three different layers, we need to consider the density of the substances. Density is the measure of how much mass is packed into a given volume. If substances have different densities, they will separate when they are mixed together due to gravity.

Here's an example of three substances that can form three different layers when mixed together:

1. Water: Start by filling a glass with water. Water forms the base layer as it has a density of 1 gram per milliliter (g/mL).

2. Oil: Add oil to the water. Oil, such as vegetable oil, has a lower density than water, about 0.92 g/mL. It will float above the water, forming a distinct layer on top.

3. Honey: Lastly, pour honey into the glass. Honey has a higher density than both water and oil, typically around 1.36 g/mL. Due to its greater density, honey will sink to the bottom, forming the third layer.

So, by combining water, oil, and honey, you will create three distinct layers in the glass. The water layer will be at the bottom, the oil layer will be in the middle, and the honey layer will be on top.

Remember, it's important to consider the densities when selecting substances to form different layers.