These substances are called surfactants.
you should know it
This substance is cellulose.
Cohesion is the force of attraction between molecules of the same substance which binds the particles together.
This is called an intermolecular force. It may be a van der Waals force, dipole-dipole attraction or a hydrogen bond.
The hydrogen bonds between water molecules and respectively hydrogen bonds between ethanol molecules are broken by mixing; new hydrogen bonds are formed between water and ethanol molecules - this second process is exothermic.
A surfactant.
you should know it
The bond between water molecules is known as a hydrogen bond.
No Hydrogen is the weakest bond that can possible form between two molecules.
This substance is cellulose.
Cohesion is the force of attraction between molecules of the same substance which binds the particles together.
This is called an intermolecular force. It may be a van der Waals force, dipole-dipole attraction or a hydrogen bond.
1.79 Angstroms
The hydrogen bonds between water molecules and respectively hydrogen bonds between ethanol molecules are broken by mixing; new hydrogen bonds are formed between water and ethanol molecules - this second process is exothermic.
Water molecules are linked by hydrogen bonds.
Water is a polar substance. In liquid water, this gives rise to hydrogen bonds between molecules, making it structurally more compact. However when water is heated up to steam, those hydrogen bonds break up and the molecules cannot be maintained globally as aggregates. The forces in play in steam are of collisional type and the polarity of the molecules does result in short-range attractive forces yielding negative second virial coefficients but in no way the molecules arrange themselves to conform to a hydrogen-bonded structure. The probability of simultaneous collision between several molecules though rare in steam may become important at high pressures below the critical point, but should not be confused with the structuration between neighbouring molecules in liquid water where hydrogen bonding takes place due to the closeness between water molecules. What is sure is that there is no hydrogen bonds above the critical point of steam. In steam hydrogen bonding is just not taking place for the molecules are too distant from each other. Collisional binary encounter does not generate hydrogen bonding!!!
A hydrogen bond.