Strontium chloride, the compound used to make red fireworks, can withstand at least 1,500 degrees Fahrenheit. That's hotter than some lava. But to make a blue firework, you need copper chloride ...

The overall reaction is pretty straightforward: When ferric chloride comes in contact with metallic copper, one of its chlorine atoms is transferred to a copper atom, making copper (II ...

The chemistry for any etching setup is important, and in recent years the entire community has moved from ferric chloride to copper chloride for a very good reason: you can recharge copper ...