# What is the difference between volatility and evaporation?

I've been trying to find the difference between volatility and evaporation and I can see almost everywhere that the volatility is the tendency of a substance to vaporize. So Q1: what makes the volatility special? I understand that the fuels are generally volatile, and I understand that they vaporize faster than water, for example. But Q2: is this the only difference?

I was thinking that volatility also makes the vapor have a different chemical composition, or did I get it wrong?

For instance, the water (a non-volatile liquid) vapor is still $\ce{H2O}$, right? Q3: Will the vapor of benzene $\ce{C6H6}$ still be $\ce{C6H6}$ or it brakes into other compounds?

• No it's still going to be benzene vapour. – orthocresol Feb 23 '17 at 18:41
• Q2: Yeah vaporised water is still H2O but not H2O(aq), vaporised water is H2O(g). This is called change of state Q3: this is also true for the C6H6(g) – americium1997 Feb 23 '17 at 18:48
• Thank you, both. So basically volatile substances are substances with low molecular forces and that's all, true? Nothing special with them when speaking about vaporization. Is this true? – Physther Feb 23 '17 at 18:59