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Because to precipitate means to come out of solution, this word is commonly used in weather, chemistry and even in biology. For a science experiment that is safe for the kids and amazing for adults I recommend DNA extraction. Strawberry DNA extraction to be more precise, follow the online instructions to make a strawberry smoothie. Mix with the extraction ...


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Mix with sodium hydroxide drain opener (outside!) The metal ions (copper and iron now) will combine with the OH- ions and drop out of solution as harmless iron and copper hydroxide and can be thrown out. The Na+ ions will combine with the Cl- ions and form aqueous NaCl and can safely be put down the drain. Even if you put too much sodium hydroxide in your ...


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The best thing to do is to put some nails in the copper solution, or anything made of iron. You will soon see that the nails ge. covered by metallic copper, which is red-brown, After maybe one hour, the solution is not blue any more. So it does not contain copper ions anymore. You can throw this solution down the drain : it will contain iron instead of ...


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The product you were using is very likely a "rust converter". Used to convert rust to a stable products before painting . I have used it several times , usually I just rinse the surface , let it dry and paint . It is also used for industrial maintenance coating of poorly prepared surfaces ( those not sand blasted). That is ;it is commonly used and ...


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