2007-01-18 21:35:04 · 6 answers · asked by {««мα∂gυу»»} 2 in Science & Mathematics ➔ Chemistry
For an electrical current to flow through a substance there must be charged particle capable of moving through the material.
In metals it is free electrons which are small enough to pass through the metallic latice. In ionic substances the electrons are bound to the ions too tightly to be freed and flow with the current so it is the ions themselves which must flow. In a liquid (wheter it be a melt or a solution) the ions are able to move freely enough to carry the current. In the solid form the ions are bound into an ionic lattice by their mutual attraction and so are unable to flow. The material is then non-conductive.
2007-01-18 22:59:29 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Solid Sodium Chloride
2016-11-07 01:51:59 · answer #2 · answered by sutor 4 · 0⤊ 0⤋
Sodium Chloride is an ionic compound, Ionic compounds are made from a metal (sodium) and a non-metal (chloride). Ionic compounds are arranged in large crystal-like lattices. The bonds between the (+) sodium ions and the (-) chloride ions are extremely strong and are stuck unable to move, so when held together in this lattice the bonds are so strong that they won't break to conduct electricity, however when in a molten state water molecules overcome this strong bonding between the particles and force them apart, allowing the sodium and the chloride ions to move around and conduct electricity. Hope this helped :)
2016-03-18 00:16:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋
electrical conduction relies on there being free electrons to create a current. In solid form NaCl has no free electrons, they are locked up in the crystaline structure. When in solution or molten the electrons are free to move around and this allows electricity to pass through them.
Pure water is a very poor conductor of electricity, it is the solutes within it which allow electrical conduction. NaCl dissociates into Na+ and Cl- when in solution and this is what allows it to conduct electricity.
2007-01-18 21:41:02 · answer #4 · answered by Alasdair S 2 · 0⤊ 0⤋
To conduct electric current,the substance should be in the form of ions.Aq.NaCl & also molten NaCl contain sodium & chloride ions.But solid NaCl doesn't contain ions.So it can not conduct electric current .
2007-01-18 22:13:50 · answer #5 · answered by Rajchem 2 · 1⤊ 0⤋
Difference in resistance. Refer to Ohm's law. That's about the limit of my chemistry after 27 years since my last chem class.
2007-01-18 21:45:19 · answer #6 · answered by iraq51 7 · 0⤊ 0⤋