Development of the Modern Freezer. Bacteria are usually the cause of food decay, but they can't grow as well or at all in freezing temperatures, which are at 32 degrees Fahrenheit (0 degrees Celsius) or lower.
HF- polar molecule: dipole-dipole forces. There are also dispersion forces and H bond between HF. BF3- nonpolar: dispersion forces. Ar- Dispersion forces between Ar atoms.
Intramolecular forces are the forces within a molecule or between atoms or different parts of a molecule. Intermolecular forces are the forces between two molecules. It isâ¦ normally said that intramolecular forces are stronger because they involve chemical bonding and that is certainly correct.