Describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only)

In the subtopic Alternative methods of extracting metals, this learning objective focuses on describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only). Within Using the Earth's resources and obtaining potable water, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include HT only, displacement, and scrap iron. displacement reaction means a chemical reaction where a more reactive element displaces a less reactive element from a compound. Avoid students often confuse the process of obtaining copper from solutions of copper compounds by displacement using scrap iron with electrolysis; instead to fix this, students should focus on the specific conditions and materials used in displacement reactions, such as recognizing that scrap iron is used to displace copper from its compound, while electrolysis involves using electrical energy to separate copper from its ions. For exam answers, review how displacement reactions work, particularly focusing on the reaction between copper compounds and scrap iron.