What is flux, solder, and a soldering iron?
A soldering iron is a tool that is frequently used when working with electronics. It has a metal tip that heats up to a very hot temperature allowing a wire, called solder, to melt on the tip. By using this hot solder it is possible to physically bond two pieces of metal. For example, two separate pieces of copper electrical wire can be joined into one with the use of solder and a solder iron. This process is called soldering. Flux is a liquid that is used when soldering. It contains chemicals that prepare the surface of metal for soldering by making the surfaces more easily bond with the molten solder. It is usually applied to each metal surface before soldering.
