See,I got this ques this morning.
You know H2O (water) and Other substances like H2S & others.
All these substances are gases at room temp,but there is an exeption for H2O (which is liquid) Why?????????????????????
2006-06-20 03:09:29 · 15 answers · asked by webmas2004 1 in Science & Mathematics ➔ Chemistry
Simple.
H2O is liquid at room temperature because of two types of bonds it contains. The first, between the H and O, is a polar covalent bond. This bond is strong because of the relatively large electronegativity difference between H and O (2.2 vs 3.44). Secondly, there are hydrogen bonds between the two hydrogens. Both these bonds result in this peculiar property of H20.
2006-06-20 11:54:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The structure of the water molecule is the reason for many of its strange properties: it is dipolar, like a magnet. The oxygen and hydrogen atoms are strongly attracted to one another. Because the H atoms are at a 105 degree angle to one another (picture a Mickey Mouse head-2 H atoms are the ears, O is the head), there is an unequal distribution of electrical charges within the molecule. When this happens the H atoms become positively charged and the O becomes negative. That creates a "lopsided molecule", unlike molecules for other substances.
The unique shape of this dipolar molecule is why water is strange in so many ways: it is the best natural solvent (important in erosion), it expands during freezing (most substances just become more dense) without weighing more, it has a skin (called surface tension) which allows for floating (important in geology and lake biology) and more.
Water molecules are indeed a wonderful mystery and without it our planet would be lifeless like the other planets.
(Never let someone tell you that Christians don't believe in science. Science is all about Creation and most of the first scientists were Deists or Believers. I highly recommend Moody Science films. They are intelligent and interesting, often awe-inspiring. I got excited about your question and ran to watch the following film again so I could answer it) Take care. Buttercup
2006-06-20 11:01:20 · answer #2 · answered by Buttercup 3 · 0⤊ 0⤋
it is simple,all the matter has a boiling point as well as a freezing point,this depends apon the bonding in the atoms or molecules.water's molecules have a strong bonding,so it is a liquid at room temperature but it is not too strong otherwise it would be a solid at room temperature,i can also give u an explanation why the bonding is not so stron,u know that the atoms of hydrohen bond with oxygen to make water,their bonding is known as covalent bonding because they share electrons with each other to be stable,so the bonding between the atoms is strong,bot their isin't a powerful force to keep the molecules of water attracted to each other,there is a only a weak force acting on them,won't u call me a genius,as i know all this information but i am just 12 years old!
2006-06-20 10:20:15 · answer #3 · answered by ♀guardian of angels♀ 3 · 0⤊ 0⤋
The rate in which the molecules "bounce" around, per se' is slower in h2o than in the other gasses. The faster the bounce the faster the exchange from liquid to gas. H20 needs a higher temp than room temperature to bounce faster. Therefore, maintaining the liquid form. Maybe?
2006-06-20 10:52:31 · answer #4 · answered by Annebelle 2 · 0⤊ 0⤋
H2O at room temp is liquid amd it does not reach its boiling point yet while H2S is already reach its boiling point that's the reason why it is a gas, and also H2O has great intermolecular forces of attraction particularly hydrogen bonding.
2006-06-20 10:38:18 · answer #5 · answered by dartmadscientist 2 · 0⤊ 0⤋
stronger intermolecular forces. Can't remember what these particular intermolecular forces are called (hydrogen something?) - but they're present in H2O, not in H2S etc. Stronger intermolecular forces means greater interactions between molecules, so more difficult to get them apart, hence it stays liquid to a higher temperature.
2006-06-20 10:16:05 · answer #6 · answered by _jellybaby 2 · 0⤊ 0⤋
H2O can hydrogen bond while H2S can't. the extra bonding hightenes the energy boundry between liquid and gas.
2006-06-20 13:49:28 · answer #7 · answered by shiara_blade 6 · 0⤊ 0⤋
Since the boiling point of water is 100* Centigrade it does not vaporise normally at room temperature which is about 27* centigrade
2006-06-20 10:16:50 · answer #8 · answered by rajkumar62 4 · 0⤊ 0⤋
Because H2O has to be at a really high temperature to evaporate into a gas.
2006-06-20 10:14:47 · answer #9 · answered by XGAL 2 · 0⤊ 0⤋
hydrogen bonding between various h2o molecules
2006-06-20 10:14:02 · answer #10 · answered by Great Advisor 2 · 0⤊ 0⤋