A council is considering phytoextraction to clean soil contaminated with metal ions at a former industrial storage yard.
Statement 1: The plants make new metal from the minerals in the soil.
Statement 2: Each harvest gives a large mass of metal, so only a small area of land is needed.
Statement 3: The plants store the metal ions they absorb in their stems and leaves.
Which of the statements are true?
Statement 1 only
Statements 1 and 2 only
Statement 3 only
Statements 2 and 3 only
136 exam-style questions on OCR GCSE Chemistry 6.1 Improving processes and products, covering 6.1.1 Extracting metals industrially and by electrolysis, 6.1.2 Life cycle assessment and recycling, 6.1.3 Biological methods of metal extraction, 6.1.4 The Haber process and the production of fertilisers, 6.1.5 Alloys and their uses, 6.1.6 Corrosion and its prevention, 6.1.7 Comparing and selecting materials, and 6.1.8 Industrial conditions, rate and position of equilibrium. Each one has a worked solution and a mark scheme showing where the marks go.