What floats on vegetable oil?

* Density is Key: Whether something floats or sinks depends on its density compared to the liquid it's in. Vegetable oil has a density of about 0.92 g/mL.

* Things that Float:

* Water: Water is denser than vegetable oil (1 g/mL), so it will sink.

* Most Plastics: Many plastics have lower densities than vegetable oil, so they float. Examples include polyethylene (PE) and polypropylene (PP).

* Certain Metals: Some metals, like aluminum and magnesium, are less dense than vegetable oil and will float.

* Things that Sink:

* Most Solids: Most solids, like rocks, wood, and most metals, are denser than vegetable oil and will sink.

* Liquids Denser than Vegetable Oil: Liquids like water and honey will sink.

Important Note: There are exceptions! A large, hollow object made of a dense material could displace enough oil to float, even if the material itself is denser than the oil.