Across
- 4. Acid found in lemon
- 6. Metal that is liquid at room temperature
- 7. Balloons are filled up with this gas
- 9. Central part of an atom
- 10. Element used in pencil
- 11. The positively charged electrode is
- 12. The process name where water changes into vapours
- 14. Substance that dissolves in a solvent is
- 15. Turns red litmus blue
Down
- 1. A species that can act as both an acid and a base
- 2. Metal used in electrical wires
- 3. The lightest element
- 4. Gas release by humans
- 5. A solution with exactly ph 7 is
- 8. Acid found in the stomach
- 13. Layer protecting Earth from UV rays