Across
- 1. This is in the second row and has three valence electrons.
- 3. The air you breathe
- 5. A superhero came from a made up planet with the same name as this element
- 6. You can find this element in swimming pools
- 8. Our pencils used to be made from this.
- 9. A transition metal that weighs around 48 AMU
- 10. You can find this in an item you can use for food
Down
- 2. This element creates glow sticks
- 4. Same name as a US coin
- 7. This element weighs around 24 AMU