english: They're both made of carbon, and yet one of them has carbon atoms in it that are arranged in one particular way -- on the left -- and you get graphite, which is soft and dark.
non_english: Oba sú vyrobené z uhlíka. Avšak jeden má v sebe atómy uhlíka usporiadané jedným spôsobom, ten vľavo, a je to grafit, mäkký a tmavý.