Across
- 4. Dark grey crystaline solid or a purple vapour
- 5. Metals found in group 1
- 6. Dense poisonous, red-brown volatile liquid
- 8. Fairly Reactive, poisonous dense green gas
- 11. Man who came up with the first good attempt to arrange the periodic table
- 12. A column on the periodic table
- 15. What the modern Periodic Table is based on
- 17. Russian chemist who developed a periodic table of the chemical elements and predicted the discovery of several new elements (1834-1907)
- 18. Force that holds two or more atoms together
Down
- 1. Whats produced when alkalis react with water
- 2. Number of protons in nucleus of an atom
- 3. Non-metals with coloured vapours (Found in group 7)
- 7. Elements that make up the big clump of metals in the middle of the periodic table
- 9. Move around the nucleus
- 10. Member of group 1 (K)
- 13. Very Reactive, poisonous yellow gas
- 14. Member of group 1 (Na)
- 16. Formed between halogens and metals
- 19. Member of group 1 (Li)