IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: mr_scholes on June 11, 2009, 05:54:26 am

Title: Melting and boiling points of salts
Post by: mr_scholes on June 11, 2009, 05:54:26 am

I don't really get the idea of boiling and melting point, and which salts have high b+m points and which has low??

Title: Re: Melting and boiling points of salts
Post by: forkasha on June 11, 2009, 07:08:17 am

for ex. water its b.p is 100 if it is higher than that it will be impure and if the m.p which is 0 is lower it is also impure and this idea applies 2 all the other substances ........ ;)

lower m.p & higher b.p

i wish i helped

Title: Re: Melting and boiling points of salts
Post by: winnie101 on June 11, 2009, 07:20:45 am

u should also know that as u go down group 1, the mp,bp decreases
ionic compounds have high mp, bp

Title: Re: Melting and boiling points of salts
Post by: mayyoya92 on June 11, 2009, 07:48:42 am

hey please explain to me how a gas which liquifies first has the highest boiling point????