More thiosulfate ions would mean that more of the copper was oxidized. So I would have thought that the solution would have stayed more green.
Now I took some of this brown liquid and put it in an evap dish. Heat makes the solution turn from brown to black. And the powder that was left was a lustrous black powder. I ground it up and mixed it with various things.
This powder in insoluble.
It does seem to react with HCl, but only slightly. It forms this very, very faintly tinted yellow solution. The black powder remains though.
It catalyzes the decomp of hydrogen peroxide.
And it makes KMnO4(aq) go from that purple/pink color to a colorless solution. Much the same if you have an acidified solution of hydrogen peroxide and you pour KMnO4(aq) in and it goes colorless.
What I'm gathering is that this substance has reducing properties.
I believe it's Cu2O. I've done some research and people who have done this experiment usually get a solid that forms in this solution, which would indicate Copper(I)Oxide. I'm just not sure why I didn't get any solid until I heated the solution.