Both are polar. Explaining chemical polarity kind of surpasses the scope of this question.
Hydrophilic
Hydrophilic, or 'water loving' refers to molecules that are easily miscible in water. Polar molecules and ionic compounds are generally hydrophilic, and non-polar molecules are generally hydrophobic.See the Related Questions to the left for more information about how to determine if a molecule is non-polar, polar, or ionic.
Hydrophilic molecules are attracted to water. Hydrophobic molecules are not attracted to water, but they are attracted to each other. Phospholipid molecules are unusual because they are partly hydrophilic and partly hydrophobic. The phosphate head is hydrophilic and the two hydrocarbon tails are hydrophobic. In water, phospholipids form double layer with the hydrophilic heads in contact with water on both sides and the hydrophilic tails away from water in the centre. This arrangement is found in biological membranes. The attraction between the hydrophobic tails in the centre and between the hydrophilic heads and the surrounding water makes membranes veery stable.
Hydrophilic molecules are those that dissolve in or interact with water. Hydrophilic molecules include carbohydrates, proteins, nucleic acids, salts and metabolic molecules like glucose and amino acids. The fatty component of lipids [fats and oils], the -CH2- tail, is strictly hydrophobic.
hydrophilic
Hydrophilic molecules
Water...
A polar molecule is hydrophilic, which means that it will easily dissolve in water. Examples of hydrophilic molecules are sugars and salts.
Hydrophobic is when something repels water and hydrophilic is when something attracts water.
Hydrophilic
molecules that attract water are hydrophilic ("water-loving")
Hydrophilic, or 'water loving' refers to molecules that are easily miscible in water. Polar molecules and ionic compounds are generally hydrophilic, and non-polar molecules are generally hydrophobic.See the Related Questions to the left for more information about how to determine if a molecule is non-polar, polar, or ionic.
hydrophilic substances are electrically polar in character, they possess a dipole. Intermolecular forces associated with this polarity attract (or are attracted by) the polar water molecules. Having sufficient energy, the water molecules can interpose themselves between and eventually surround the hydrophilic substance thus reducing the repulsive intermolecular forces acting between these hydrophilic molecules in their pure state... Energy and Entropy effects are driving the process...
Soaps are complex combinations of molecules. On the surface of the soap there are many holes and spaces between the molecules that the water can enter. There the water molecules come in and probably penetrate many layers deep into the soap, and stay there. Thus the soap expands and becomes bigger. This happens most in pure water and then less in liquids which not like water. The reason for the difference is that inside the soap there are both "hydrophilic" (water liking) and "hydrophobic" (water hating) portions of the molecules. But importantly, the hydrophilic portions are on the outside of the molecules so water can get close to the molecules. So the more like water the liquid is, the more the water can get close to the molecules and stay with them (be absorbed into the soap). When the water has other particles dissolved in it, like iced tea, Sprite or salt water, the water molecules can't get as close to the hydrophilic portions. And of course the oil molecules are repelled by the hydrophilic portions of the soap. So the answer of why soap absorbs the water is that the water molecules penetrate the soap and stay with the hydrophilic portions of the soap molecules. This happens more when the liquid is more like water.
Hydrophilic molecules are attracted to water. Hydrophobic molecules are not attracted to water, but they are attracted to each other. Phospholipid molecules are unusual because they are partly hydrophilic and partly hydrophobic. The phosphate head is hydrophilic and the two hydrocarbon tails are hydrophobic. In water, phospholipids form double layer with the hydrophilic heads in contact with water on both sides and the hydrophilic tails away from water in the centre. This arrangement is found in biological membranes. The attraction between the hydrophobic tails in the centre and between the hydrophilic heads and the surrounding water makes membranes veery stable.
The cause is the formation of hydrogen bonds between water molecules.Any hydrophilic molecule that dissolves in water make H-bonding with water molecules
hydrophilic