why oil rises on the surface of the water
Answers
⭐ANSWER⭐
Because oil is less dense than water .
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Answer:
Because oil is less dense than water, it will always float on top of water, creating a surface layer of oil.
Explanation:
Oil floats on water because of two reasons
1- immiscibility
2- density difference.
Immiscibility- like dissolves like ( non polar substance dissolve non polar and polar dissolves polar) . Water is polar and oil is non polar, so no attraction between the molecules and this leads to formation of separate layers.
Polarity is because of net dipole moment . Electric dipole is like a magnet which has north and south pole. Electric dipole has positively and negatively charged ends. Magnitude of positive charge can be greater than negative charge or vice versa.
The difference between the magnitudes of these charges gives the net dipole moment or strength. Dipoles with similar strength dissolve in each other more readily than dipoles with very different strengths.