Antonija  +  243922 Sun, 09 Jul 06 09:01 AM CAn you please check it? Thank you. Chemical composition of oil   Oil is sticky, oily liquid, of brown-greenish colour. According to its chemical composition it is a very complex mixture/compound made of several thousands various hydrocarbon compounds. They can be distinguished by the way they mutually  tie carbon atoms and by its saturation with hydrogen. The lightest compound in oil is methan (gas), and the heaviest compounds are heavy asphalt substances. Antonija Joined on Sun, Mar 5 2006 Croatia Contributing Member 1,316

	Alan.es  +  243953 Sun, 09 Jul 06 01:53 PM Oil is sticky, oily liquid, of brown-greenish colour. According to its chemical composition it is a very complex mixture of several thousands of various hydrocarbon compounds. They can be distinguished by the way the carbon atoms are linked and by their degree of saturation with hydrogen. The lightest compound in oil is methane (gas), and the heaviest compounds are heavy asphalt substances. Alan.es Joined on Sun, Apr 16 2006 Full Member 303

	Squeaky  +  244048 Mon, 10 Jul 06 12:34 AM I thought the word 'viscous' would be a better alternative than 'sticky'. Especially as your speaking of oil in general terms. Oil is a viscous liquid of brown-greenish colour. Squeaky Joined on Sun, Nov 13 2005 Australia Full Member 202

	Antonija  +  244172 Mon, 10 Jul 06 09:30 AM Thank you both. Squeaky, I have noticed that the author uses both terms separately 'viscous' and 'sticky'. I guess they mean more or less the same. Viscous (thick and sticky), according to  my Oxford Advanced Learner's Dictionary.. Antonija