A) gases; solids B) metals; nonmetals C) nonmetals; metals <span>D) reactive; nonreactive </span> I think the correct answer is option B. The stair-step line between the pink squares and the yellow squares separates the metals from the nonmetals. Hope this helps.
<span>Soot is created when burning happens incompletely, because there was an insufficient amount of oxygen supplied. As soot is made from carbon particles, the chemical symbol will be C, for carbon.</span>