Iron can combine with a variety of substances to form compounds, depending on the conditions and the specific chemical reactions involved. Some common substances that react with or combine with iron include:
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Oxygen: Iron readily combines with oxygen to form iron oxides, such as rust (iron(III) oxide, Fe2O3) and iron(II) oxide (FeO).
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Sulfur: Iron can react with sulfur to form iron sulfides, such as iron(II) sulfide (FeS).
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Carbon: Iron can combine with carbon to form iron carbide (Fe3C), which is an important component in steelmaking.
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Chlorine: Iron reacts with chlorine to produce iron(III) chloride (FeCl3) and iron(II) chloride (FeCl2).
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Hydrogen: Iron can react with hydrogen in certain conditions to form iron hydride (FeH2).
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Acids: Iron can react with acids to form iron salts. For example, it reacts with hydrochloric acid to produce iron(II) chloride (FeCl2) and hydrogen gas.
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