which of the following best explains why you sanded the copper wire before burning it?\n○ to create less…

which of the following best explains why you sanded the copper wire before burning it?\n○ to create less friction between the copper and the tongs\n○ to make sure that copper metal was exposed on the surface of the wire\n○ to make the copper wire flammable\n○ to weaken the copper wire so it would be more reactive\ndone

which of the following best explains why you sanded the copper wire before burning it?\n○ to create less friction between the copper and the tongs\n○ to make sure that copper metal was exposed on the surface of the wire\n○ to make the copper wire flammable\n○ to weaken the copper wire so it would be more reactive\ndone

Answer

Brief Explanations:

Copper wire can form an oxide layer on its surface. Sanding removes this layer to expose pure copper metal for a better reaction during burning. Friction with tongs is not the main reason. Copper is already flammable to some extent and sanding doesn't make it flammable in a new - way. Also, sanding doesn't weaken it to make it more reactive in the context of burning; it's about exposing the metal.

Answer:

to make sure that copper metal was exposed on the surface of the wire