please answer .
for science question
2007-12-15 14:47:51 · 7 answers · asked by Kisses! -A 2 in Science & Mathematics ➔ Chemistry
Why is any substance liquid. It depends on the melting point (or the melting range) and the pressure. Most materials can remain solid at temperatures above the melting point if they are under pressure. This does not work for water because water is one of very few materials which are less dense as a solid than as a liquid (that's why ice floats).
2007-12-15 14:57:56 · answer #1 · answered by Gary H 7 · 0⤊ 0⤋
ethanol is an alcohol CH3CH2OH. the intermolecular forces present on this molecule are London and Hydrogen Bonds (H Bonds) The strongest intermolecular force is H Bonds, which means is the hardest to break. Since H Bonds is the strongest, and this molecule has it, it takes more time for the force to break. Thats why its melting point is higher than normal Carbon molecula like Ethane.
2007-12-15 15:21:49 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Allotropes of carbon, diamond and graphite. Both connected by strong covalent bonds giving rise to high boiling points. Therefore both are solids at r.t.p
2016-05-24 03:47:46 · answer #3 · answered by ? 3 · 0⤊ 0⤋
The melting point of ethanol is −114.3 °C or -174 Fahrenheit. It would have to be this cold to become a solid.
2007-12-15 14:53:59 · answer #4 · answered by Bec 2 · 0⤊ 0⤋
Rm temp does not provide sufficient heat to break intermolecular H-bonds of ethanol.
2007-12-15 14:51:40 · answer #5 · answered by cobrashake 2 · 1⤊ 0⤋
nitrogen wants to bond with four free electrons, therefore it is very stable at room temp. to break the bonds you would have to add heat (energy)
2007-12-15 15:05:54 · answer #6 · answered by the smart chick 2 · 0⤊ 0⤋
some compounds have low melting points
2007-12-15 14:50:25 · answer #7 · answered by Anonymous · 0⤊ 0⤋