Copper sulfate and steel wool

[Pondo]

Steel wool has a coating of oil on it to prevent it from rusting. When I use it during cold bluing, I make sure to use acetone on it to remove the oil beforehand. That's likely why the reaction was so slow.

[hassnyarub]

I guess it's copper, forming and precipitating on the metal, since iron is turning into ferrous sulphate

[lamnad]

I don't think many Male Chemists would comment on how pretty of a blue Copper Sulfate is but I really appreciate that you did. I have thought about it to myself on other chemicals but given it is not relevant to the reactions, I never mentioned it.

[unicornsqueezins]

It's transdimensional Cheeto dust, because science.

[sunila]

Which chemical use on the copper to throw out the needle

[rubbertire]

Doesn't that have a danger label? Should you have gloves?

[shantanutamuly]

How much time it takes to complete the reaction

[aboveaveragecat]

Doesn't this stuff make green fire when it burns?

[YourWrongImRight]

so this is a single replacement reaction? but how do we know that

[fakethoven]

I guess it's copper
I don't know because I'm 11 year's old