An ice cube will float in any liquid that is less dense than itself. Here's why:

* Density: Density is a measure of how much mass is packed into a given volume. Denser objects are heavier for their size.

* Buoyancy: Objects float when the buoyant force (the upward force exerted by the liquid) is greater than the object's weight.

Since ice is less dense than water, it floats in water.

Here are some examples of liquids where an ice cube would float:

* Water: As mentioned, ice floats in water.

* Saltwater: Saltwater is denser than freshwater, so ice cubes will float even more easily.

* Vegetable Oil: Oil is less dense than water, so ice will float in it.

* Kerosene: Kerosene is also less dense than water.

Here are some liquids where an ice cube would sink:

* Honey: Honey is much denser than water.

* Syrup: Syrup is denser than water.

Let me know if you'd like more examples!