My new crystals

[Sensei]

My new crystals...

 

I just yesterday noticed how they grew up.

 

 

 

 

They were growing up 4-5 months at least. I set up beaker in June-July 2015. The largest one has 3 cm +-.

Edited November 12, 2015 by Sensei

[Klaynos]

I recall doing this at school, good days.

[GrandMasterK]

what is this?

[Klaynos]

I'd guess copper sulfate.

[Sensei]

If it would be Copper Sulfate dissolved in water, and reduced, what would be doing this piece of metallic Copper inside of flask?

I would have to have Sulfuric acid initially in flask.

[MandySwift]

Beautiful moments. That's one of the reason I liked to such experiments in my studenthood.

[Klaynos]

If it would be Copper Sulfate dissolved in water, and reduced, what would be doing this piece of metallic Copper inside of flask?

I would have to have Sulfuric acid initially in flask.

For some reason I completely ignored the big lump of copper.

[GrandMasterK]

How does this work?