Reactions of Iron

This video explores the reactions of iron with air, water, halogens, acids, and in displacement reactions. Iron reacts with air to form rust, a hydrated iron oxide, and with water if air is present. It forms iron halides with halogens, though iodine reacts less effectively. Iron reacts with acids to produce metal salts and hydrogen, with concentrated acids sometimes forming a protective oxide layer. In displacement reactions, iron can displace metals lower in the reactivity series. The video concludes with a summary of these reactions.

What is the result when iron reacts with moist air?

• Formation of iron chloride

• Formation of hydrated iron oxide

• Formation of iron carbonate

• Formation of iron sulfide

What happens when iron is heated in the presence of oxygen?

• It forms iron carbonate

• It forms iron chloride

• It forms iron oxides Fe2O3 and Fe3O4

• It forms iron sulfide

Which halogen does not react successfully with iron?

• Chlorine

• Iodine

• Fluorine

• Bromine

What is the effect of concentrated nitric acid on iron?

• It reacts violently with iron

• It dissolves iron completely

• It has no effect on iron

• It forms a protective oxide layer on iron

Which metal ions can iron displace from their solutions?

• Zinc, Magnesium, and Aluminum

• Tin, Lead, and Copper

• Sodium, Potassium, and Calcium

• Gold, Silver, and Platinum