Intermolecular vs. Intramolecular forces

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AdamH02
Posts: 31
Joined: Mon Jun 17, 2019 7:23 am

Intermolecular vs. Intramolecular forces

Postby AdamH02 » Fri Jul 12, 2019 10:47 pm

What is the difference between the two and what is more powerful/stronger/ harder to break apart?

Radha Patel 4I
Posts: 97
Joined: Tue Feb 12, 2019 12:15 am

Re: Intermolecular vs. Intramolecular forces

Postby Radha Patel 4I » Sat Jul 13, 2019 1:58 pm

Intermolecular forces : Forces that hold molecules in a substance

Intramolecular forces: Forces that hold atoms in a molecule

Intramolecular forces are stronger because they contain covalent, ionic, and metal bonds.

Haorui Li 1A
Posts: 30
Joined: Mon Jun 17, 2019 7:23 am

Re: Intermolecular vs. Intramolecular forces

Postby Haorui Li 1A » Sun Jul 14, 2019 2:23 pm

Intramolecular forces are the forces that hold atoms together within a molecule.
There are 3 types of intramolecular bonds: covalent, ionic, and metallic.

Intermolecular forces are forces that exist between molecules.
The four key intermolecular forces are as follows: Ionic bonds > Hydrogen bonding > Van der Waals dipole-dipole interactions > Van der Waals dispersion forces.

AdamH02
Posts: 31
Joined: Mon Jun 17, 2019 7:23 am

Re: Intermolecular vs. Intramolecular forces

Postby AdamH02 » Wed Jul 17, 2019 8:15 pm

I see, thanks for the explanation. The textbook also does a good job at tackling this issue.

Leah farhadi 1F
Posts: 36
Joined: Mon Jun 17, 2019 7:23 am

Re: Intermolecular vs. Intramolecular forces

Postby Leah farhadi 1F » Thu Jul 18, 2019 4:04 pm

Usually boiling and melting points have to do with intermolecular forces, where the strongest would be ion-ion interactions, then ion-dipole, then dipole-dipole, then London dispersion. Intramolecular forces are those that hold molecules themselves together, so the strongest would be ionic and the weakest would be covalent.

somyapanchal1D
Posts: 34
Joined: Mon Jun 17, 2019 7:23 am

Re: Intermolecular vs. Intramolecular forces

Postby somyapanchal1D » Sat Jul 20, 2019 4:15 pm

Intermolecular forces are forces that occur between two or more molecules/compounds.
Intramolecular forces are forces that occur within a molecule, or in other words between two atoms of a molecule/compound.

For example, in a group of H20 molecules, intermolecular forces occur when the hydrogen atom of one water molecule comes into contact with the electronegative oxygen atom in another water molecule. This form of intermolecular forces is called hydrogen bonding. Intramolecular force in this case would be the H-O bond which a polar covalent bond. There is unequal sharing of electrons between the electronegative oxygen and the hydrogen.

Intramolecular forces are stronger and harder to break because they are actual bonds. Intermolecular forces are weaker but exhibit physical properties of molecules (boiling/melting point and density).


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