Lesson: Chapter 16 — Changes of Matter
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In the equation 2Mg(s) + O2(g) → 2MgO(s), what does the symbol (s) indicate?
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Solid. So both the magnesium and the magnesium oxide are in the solid state.
l = liquid, g = gas, aq = aqueous. In this equation the oxygen carries (g) because it is a gas.
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