Polar molecules are mixed better with water.
Because long hydrocarbon tails cannot interact with water
Grease is non-polar - vaseline, oil, wax - they are all hydrocarbons, with bonds that aren't polar. To remove a grease from your hands you need a non-polar solvent, not water.
A fatty acid consists of the polar acidic -COOH functional group and the non-polar alkyl CnH2n+1 chain, which in most cases, n=15-18. A triglyceride consists of distinct hydrophillic (glycerol) and hydrophobic (fatty acid) sections, but to answer your question, the fatty acid itself has a hydrophillic part which is the -COOH group.
Polar molecules dissolve in water. The reason why polar molecules dissolve in water, but not non-polar molecules is because non-polar molecules can't form hydrogen bonds.
Polar molecules are soluble in water because water is a polar molecule itself. This means that water has a positive and negative end, allowing it to attract and surround other polar molecules, dissolving them easily.
Because long hydrocarbon tails cannot interact with water
The cell would dissolve in water.
The cell would dissolve in water.
The cell would dissolve in water.
Grease is non-polar - vaseline, oil, wax - they are all hydrocarbons, with bonds that aren't polar. To remove a grease from your hands you need a non-polar solvent, not water.
No. Because the polar hydroxyls of glycerol and the polar carboxylates of the fatty acids are bound in ester linkages, triglycerides are nonpolar, hydrophobic molecules, that are essentially insoluble in water.
This is called the hydrophobic 'side' of the phospholipid molecule
A fatty acid consists of the polar acidic -COOH functional group and the non-polar alkyl CnH2n+1 chain, which in most cases, n=15-18. A triglyceride consists of distinct hydrophillic (glycerol) and hydrophobic (fatty acid) sections, but to answer your question, the fatty acid itself has a hydrophillic part which is the -COOH group.
Water attracts polar molecules and repels non-polar molecules because water has polar molecules. Water does have a net dipole though it doesn't have net charge.
Polar molecules dissolve in water. The reason why polar molecules dissolve in water, but not non-polar molecules is because non-polar molecules can't form hydrogen bonds.
Water is polar while oils are non-polar. Molecules that are polar will mix with other polar molecules, and non-polar molecules will mix with other non-polar molecules. Polar and non-polar molecules will not mix.
That oil does not dissolve in water and oil's molecular structure has no dipole moment. Hence they are unable to form dipole-dipole bonds with polar molecules like water (hence oil does not mix with water)