chenbeier

It is section not sextion. You can mould a pin with a epoxyresin. Then grind and polish it. Under the microscope you can find a copper core and a nickel gold layer on top.

In the other forum it was already denied to make compounds for medicine.

No good Idea to heat this to 120° C. Some oxidation.

What kind of crystals you talking about? Copper is not soluble in water. You need ions, copper sulfate, copper chloride, copper nitrate, etc.

In the pond don't worry, you will not drink large amounts of the water. The pipework is questionable, especially you have lead and copper pipes mixed, so the lead can be dissolved and drinking water should be lead free.

Heat will make it, but also if you dissolve both components in water.

Acetylchloride or -Bromide

Probably, but also a lot of carbonate.

You have to add until solution gets alkaline. Maybe heat up a little bit.

Dissolve the Hydroxide in water , then add some drops of the solution to the Putrecinehydrochloride.

The odor comes from free Aminogroups. In the hydrochloride the amino groups changed to ammonium, what has no odor. You have to add some hydroxide and the odor comes back.

Calcium ions are Ca2+ so they lost 2 electrons

If it says dissolved then it is dissolved. But calcium can make compounds, like lime, CaCO3 or gypsium CaSO4 and others , which soloubility is poor. So there can be not dissolved particles in the water or other liquids. I think also heart attack is caused by this, if not solouble calcium compounds and other compounds block the venes.

It is the same, one contains crystal water., which has no influence for the chemical reaction.

This question was disscussed in an other forum already. The OP did nothing.