2條分子既問題(答到1條都可以答)

係咪物質既分子愈密 就愈難燒?世上分子最密既物質係咩?

No. Burning is a chemical process, not a physical process. It depends on the chemical reaction between a substance combining with oxygen.

In the actual fact, Avogadro's hypothesis tells that 1 mole of a substance contains the same number (i.e. Avogadro's number, which is 6 x 10^23) of molecules. The density of a substance depends on the mass of the molecules. The highest density thus occurs in substances that has the largest atomic mass number. Since Uranium-238 is the heaviest naturally occuring element Its density is the highest among elements in nature.


物質既分子好密 會唔會阻到D磁力既通過? 例如有咩可以阻到D磁力既通過?

The passing of magnetic field lines depends on the permeability of a substance, which depends on the molecular magnetic dipole structure of the substance. Vacuum has the lowest permeability, yet magnetic field lines still can pass through.