And why?
2006-11-21 09:26:50 · 5 answers · asked by ♥ 6 in Science & Mathematics ➔ Chemistry
Galena is a compound because it is a mix of two elements: PbS, lead sulfide. An element is pure--lead (Pb) or sulfur (S)
2006-11-21 09:29:35 · answer #1 · answered by Taivo 7 · 0⤊ 0⤋
Compounds have definite, non-variable compositions, and they are made up of one or more elements in a fixed ratio. Another way to tell if something is an element or a compound is to look at the periodic table. If galena (or any other) is not on the periodic table, then it is not an element.
2006-11-21 17:33:51 · answer #2 · answered by bunnyluv 2 · 0⤊ 0⤋
Galena is lead sulfide. Thus, it is a compound of the element lead. Why? By definition a compound is a material that consists of two or more elements combined chemically. Thus, a chemical compound.
2006-11-21 17:31:12 · answer #3 · answered by Flyboy 6 · 1⤊ 0⤋
compound: "Galena is lead sulfide, PbS, and is the most important ore of lead."
reason: "A chemical compound is a chemical substance formed from two or more elements, with a fixed ratio determining the composition."
2006-11-21 17:31:50 · answer #4 · answered by maegical 4 · 0⤊ 0⤋
compound - lead ore
2006-11-21 17:36:58 · answer #5 · answered by writer1055 3 · 0⤊ 0⤋