Across
- 2. What are all elements made up of?
- 5. What is the strongest alloy on earth?
- 7. What is the name of a furnace that was once widely used to smelt iron?
- 10. What is the name of the waste matter left behind during the process of smelting iron?
- 11. What is the process by which two or more atomic nuclei combine to form a heavier nucleus?
- 12. Which element has 26 protons and electrons?
- 14. Which metal is mainly used to make bells?
- 15. What is the strongest material ever found?
- 16. What kind of stars are formed after a supernova?
- 17. What shape do 6 carbon atoms form?
- 18. In what city was the first modern skyscraper built?
Down
- 1. What is it called when you combine two or more metallic elements?
- 3. What type of bug is copper good at killing?
- 4. Which metal did the ancient people obsess over?
- 5. What is the process where you extract metal from an ore using heat?
- 6. Which metal came from the mineral malachite?
- 7. Which element transformed the age of warfare?
- 8. Which metal are most airplanes made out of?
- 9. What is the strongest shape for building structures?
- 13. What lightweight black carbon residue burns at around 1,000 degrees celcius?