Hi! We'd a lab in school today, but no matter of how much I think about it, I can't get what happened. We'd to construct our experiment on our own, supported by our teacher. We chose to connect electricity to a water and NaCl solution. I can't the English word for that, and my dictionary don't include it, so ... Anyway, we used coppar elements, you know those who have contact with the solution itself, in the water. (My English vocabulary is quite finit, and also my dictionary...) We was expecting some cind of chlorine gas, and hydrogen and oxygen gases too. Maybe we got them, but we couldn't observed them. What we got, and it was way more interesting, was one green substance. We believe it may be some salt with copper, due to its green color. But I can't set up the forumlas for that. My work looks like this current: [tex] Na^+ + e^- \rightarrow Na[/tex] [tex] 2Cl^- - 2e^- \rightarrow Cl_2 [/tex] [tex] 2H^+ + 2e^- \rightarrow H_2 [/tex] [tex] O_2^- - e^- \rightarrow O_2 [/tex] [tex] Na + O \rightarrow NaO [/tex] I'm not sure about this, but it would one occur there water touches air. Maybe this: [tex] Na + H_2 O \rightarrow ~NaOH + H[/tex] ?? I dunno. Help me please!