Recall that potassium chloride and potassium sulfate are obtained by mining. (Chemistry only)

In the subtopic Production and uses of NPK fertilisers, this learning objective focuses on recall that potassium chloride and potassium sulfate are obtained by mining. (Chemistry only). Within The Haber process and the use of NPK fertilisers, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include chemistry only, potassium, mining, potassium chloride, and potassium sulfate. potassium chloride means a potassium salt obtained by mining, used in fertilizers. Avoid students often confuse potassium chloride and potassium sulfate as being obtained from different sources rather than both being mined; instead remember that both potassium chloride and potassium sulfate are obtained through mining processes. For exam answers, recall that potassium chloride and potassium sulfate are obtained by mining.