Across
- 3. Important element for plants, often added as fertiliser
- 4. The most common elementi in the universe
- 7. Strong dissinfective, also forms salt
- 8. Found in the earth's crust and our blood
- 10. A metal important for bone structure and muscles
Down
- 1. Needed for cellular respiration
- 2. The main "building block" of all life
- 5. Noble gas that glows when conducting electricity
- 6. Used as nuclear fuel
- 9. Its molecular form is composed of 8 atoms