CHAPTER 9: Metal extraction

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Across
  1. 3. Main ore of iron
  2. 4. Main ore of aluminum
  3. 5. Rust prevention method that add a layer of chromium or tin over steel
  4. 6. Rust prevention method that add a layer of plastic over steel
  5. 10. Mixture of iron, carbon and another metal
  6. 11. Rust prevention method that supply electrons using an electrolytic cell
  7. 12. Metal that can be added to an alloy steel to avoid rust
  8. 13. Element used to purify pig iron
  9. 14. Mixture of iron and carbon
  10. 17. Rust prevention method that add blocks of a reactive metal to the iron surface
Down
  1. 1. Rust prevention method that add a layer of paint over steel
  2. 2. High tower used to extract iron
  3. 7. Extraction method for iron, zinc and copper
  4. 8. Rust prevention method that add a layer of zinc over steel
  5. 9. Extraction method for aluminum
  6. 15. Red-Brown powder consisting in hydrated iron oxide
  7. 16. Rust prevention method that add a layer of oil over steel