Some Materials give off different colors when heat is applied.


Try this:

Take the end of a knife, wet it and dip it in salt. Then, take your good old Bic, and start the flame. Observe the color, then hold it under the salt. See the color change?

Salt normally gives off a dark red, to an orange color.

Copper, on the other hand, gives off green light energy. It also gives off some toxic fumes. Thats what you're tasting.

Bic ftw.