Redox Reactions

For centuries, humans have been extracting metals from molten ores. Today, the basic technique remains the same, but how does extraction work? Chemistry - Reactions - Learning Points. Metals can be extracted from rocks if they are heated with charcoal. A redox reaction is a process that involves reduction and oxidation. Reduction is the removal of oxygen, and this requires a form of carbon and a heat source. Iron is extracted within a blast furnace, in which highly exothermic reactions take place. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.