📝 Topic 2: Atoms, elements and compounds
State the name of the main iron ore used in the blast furnace.
State how the main source of heat is provided in the blast furnace.
Name the gaseous reducing agent in the blast furnace.
Write a symbol equation for the reduction of iron(III) oxide by carbon monoxide.
Write two symbol equations to show the role of limestone in removing silicon(IV) oxide from iron ore.
Explain why A, B, C and D are isotopes of iron.
Complete table to show protons, neutrons, electrons in Fe2+ and Fe3+ ions.
Describe a test for aqueous Fe2+ ions.
Define the term oxidising agent.
Explain why conversion of Fe2+ to Fe3+ is oxidation.
State one condition needed for oxidation with potassium manganate(VII).
Suggest the identity of the other product formed when iodide reduces Fe3+.