cell membrane
Rough ER (Endoplasmic Reticulum)
they form temporary, weak dipole attractions between molecules
temporary
A generator can be used as a temporary source of power
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The smooth endoplasmic reticulum.
Rough ER (Endoplasmic Reticulum)
cellular respiration
dalton
cellular respiration
they form temporary, weak dipole attractions between molecules
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All polar molecules have a permanent dipole moment, but London dispersion forces in non-polar molecules can cause temporary dipole moments as well.
The magnetic properties of a temporary magnet are derived from the fact that its molecules are aligned along the magnetic polarity: they mostly point in the same direction and so one end of the temporary magnet is North and the other is South. Banging the magnet can knock some of these molecules out of alignment so that they face random directions. As a result, there is no particular direction in which is then North and South and so magnetism is reduced. When enough molecules have been knocked out of alignment you are left with a demagnetised piece of metal.
Molecules are two or more atoms held together by a covalent bond. This is a very strong bond as it is held together by strong electrostatic charges. All covalent molecules (apart from those held together in a covalent lattice such as Diamond) are bonded to other molecules by Van der Waal forces. Its is these intermolecular bonds that control boiling and melting points. Van der Waals are (in this case) the attractive force between molecules, they are temporary bonds between temporary dipoles and as electrons orbit the nuclei of atoms the position changes. This temporary dipole induces other molecules to form induced dipoles. Strength varies due to shape of molecule (the more "oblong" the greater the strength of the bond) and by size (the greater the size the greater the strength of the bond.)
No, London forces are not occurred by the dipoles, they are formed with the temporary asymmetrical distribution of the electron clouds of molecules. For example, bromine molecules have only London forces between them.
The Sun's light breaks the chlorine (or bromine) form the molecule, forms a temporary compound with something else, and ozone attacks that molecule and releases the chlorine (or bromine) again.