Question

List all items known to you that float on water. Check and see if they float on oil or kerosene.

Answer 1

Hint: Compounds with difference in density floats on others. The compounds or substances with density more than water floats on water and the substances which have density more than oil floats on oil. Some compounds will float on both oil and water. The density of water is \[1gm{\left( {cm} \right)^{ - 3}}\]

Complete answer:
Like dissolves in nature, which means the polar compounds will dissolve in polar solvents and the non-polar compounds will dissolve in non-polar solvents. Though the compounds with the same nature floats on one another this is due to the difference in density.
Water is a polar solvent with density \[1gm{\left( {cm} \right)^{ - 3}}\] so any substances float on water. Some of them are paper, wood, plastic materials, wax, ice, thermocol, and oil. Plastic has very low density compared to water. Oil floats on water will see it generally and it is an example of emulsion.
In the above substances, paper, wood, plastic material, and thermocol floats on oil.
Kerosene is a non-polar solvent.
In the above-mentioned substances that float on water some substances will float on kerosene. They are paper, plastic substances and thermocol floats on kerosene.

Note:
The density of kerosene is \[0.81gm{\left( {cm} \right)^{ - 3}}\] whereas the density of water is \[1gm{\left( {cm} \right)^{ - 3}}\] Due to the less density compared to water. Kerosene also floats on water. Oil also has density compared to water. The density of oil is \[0.9gm{\left( {cm} \right)^{ - 3}}\] . So, due to the less density of oil compared to water. oil also floats on water.