Hydrogen bonds
These are polar forces, intermolecular forces of attraction between molecules.
Dipole-Dipole forces
In non-polar covalent molecules weak forces exists & are known as Van der Waals' forces
Inter-particle force, also known intermolecular force, are forces of attraction and repulsion which act between neighboring particles. compared to intramolecular forces, they are a weak force.
Dipole-dipole The attraction between two dipoles.
Adhesive forces are the attraction between molecules of different substances. This differs from cohesive forces which is attraction between same substances.
These are polar forces, intermolecular forces of attraction between molecules.
The attraction forces between gas molecules are very small,but it could be increased by applying high preesure and low temperature. Thus it could be concluded that attraction between gas molecules leads to its liquifaction.
The strong forces of attraction between the positive and negative regions of molecules are called electrostatic forces or electrostatic interactions.
Dipole-Dipole forces
The force of attraction between unlike molecules is known as intermolecular attraction or van der Waals forces. These forces can be categorized as dipole-dipole interactions, hydrogen bonding, or London dispersion forces. The attraction between the surfaces of different contacting bodies is called adhesion and is typically due to intermolecular forces such as van der Waals forces or electrostatic interactions.
In non-polar covalent molecules weak forces exists & are known as Van der Waals' forces
There are strong forces of attraction between particles in a solid.
The intramolecular bonds are stronger.
When molecules are close together, a slight attraction can develop between the oppositely charged regions of nearby molecules. Chemists call such intermolecular forces of attraction van der Waals forces. (This also occurs in the phenomenon known as Hydrogen-bonding.) What is the alternate of a slight attraction - it is called the covalent bond. Note that an ionic bond is a type of covalent bond.
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A drop of water appears like a pearl due to the cohesive forces among its molecules. Forces of attraction between water molecules and other molecules called adhesive forces.