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Blast Furnace
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
Check
Across: 1. Breaks when hit. 3. Waste material from a furnace. 5. This mineral is iron ore. 7. Atoms in crystals arranged on top of each other. 8. Reaction to add oxygen 9. Alloy between iron and carbon. 10. Colourless, odourless and very poisonous gas consisting of carbon and oxygen atoms. 13. Predictable pattern. 14. Huge furnace in which iron is made. 18. What comes out of a blast furnace. 19. Substances in a material that aren't wanted. 20. Melted state 21. Reaction that gives out heat.
Down: 2. Rock made from calcium carbonate. 4. Mixture of metals. 6. Minerals often make beautiful _____ 10. Greenhouse gas made of carbon and oxygen 11. Does not deform easily 12. Metal that is used in lots of materials. 13. Taking oxygen away from a substance. 15. Does not change shape easily. 16. Brown tarnish on steel 17. Coal heated to get rid of impurities like sulphur.
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