Question

the table shows the physical properties of an unknown substance after it was tested in a lab
appearance dull
conductivity none
malleability brittle
this unknown substance is most likely
a a metal
b an alloy

Explanation:

Metals are shiny, good - conductors and malleable. Alloys also have metallic properties. The given substance is dull, non - conducting and brittle, which are non - metal properties.

Answer:

Neither A. a metal nor B. an alloy.