Across
- 2. - The element with atomic number 6, found in all organic life forms (6 letters)
- 5. - Scientist who discovered radium and polonium (5 letters)
- 7. - The second element in the periodic table and a noble gas (6 letters)
- 9. - The basic working unit of the brain and nervous system (6 letters)
- 10. - Scientist known for the theory of relativity (8 letters)
- 13. - Negatively charged particles in an atom (9 letters)
- 14. - The basic unit of a chemical element (4 letters)
Down
- 1. - A metal with the symbol Fe, essential for blood production (4 letters)
- 3. - Ancient Greek scientist known for the principle of buoyancy (10 letters)
- 4. - Naturalist who proposed the theory of evolution by natural selection (6 letters)
- 5. - The process by which gas turns into liquid (12 letters)
- 6. - The green pigment in plants that absorbs sunlight for photosynthesis (12 letters)
- 8. - A microscopic organism that can cause disease (5 letters)
- 11. Nobel - Inventor of dynamite and founder of the Nobel Prize (5 letters)
- 12. - Inventor of the electric battery (5 letters)