i know it has something to do with the charges but please help
2006-10-29 01:11:57 · 7 answers · asked by stace9012003 2 in Science & Mathematics ➔ Chemistry
it has something to do with charge i think and also can you make it quite simple i'm only a kid lol
2006-10-29 03:46:58 · update #1
thats because ionic substances are made of ione containing opposite charges. Electrostatic interactions are the strongest and the most difficult to break and thus need high energy in the form of heat to break them. Thus they have high melting point
2006-10-30 06:17:32 · answer #1 · answered by metallixan 2 · 0⤊ 0⤋
Because of the strong electrostatic forces between the bulk of ions. Even if you manage to move one ion apart there will be other ions in close proximity exherting more force.
The high melting point has nothing to do with ionic bond strengh as some may suggest (covalent bonds are usually stronger than ionic, but covalent compounds have low melting points).
It has nothing to do with the electrostatic forces between single ions, the bulk is what counts.
2006-10-29 01:55:09 · answer #2 · answered by Dr. J. 6 · 0⤊ 0⤋
In ionic substances there are a huge number of positive and negative ions which are attracted to each other. To melt the ionic solid a high temperature is needed to overcome the attraction of all these 'bonds' and allow the ions to move about.
2006-10-29 10:04:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Ionic substances are made of positive and negative ions. These ions stick together like mad because of the attraction between the positive and the negative ions and form big structures (crystals) a bit like building using alternate white and red Lego bricks, so that you don't get two reds together or two whites together. The energy needed to break these strong electrostatic forces is very high - in other words you have to make them very hot (high energy) to change them to a liquid.
2006-10-29 01:23:43 · answer #4 · answered by JJ 7 · 0⤊ 0⤋
Its because of the strong electrostatic force between the two ions.
2006-10-29 01:15:41 · answer #5 · answered by Anonymous · 0⤊ 0⤋
strong electrostatic attraction between the positve ion and the negative ion
2006-10-29 01:39:05 · answer #6 · answered by oblivionrokz 2 · 0⤊ 0⤋
when molecules change state, the atoms within the molecules remain unchanged, so u have to consider the intermolecular forces between the molecules:
dispersion forces < dipole-dipole interactions < hydrogen bonds < ion dipole
2006-10-29 01:33:10 · answer #7 · answered by wee z 1 · 0⤊ 0⤋