Across
- 2. most reactive non metal
- 5. most stable and unreactive elements
- 6. gas,solid,liquid
- 7. a material that electricity can pass through easily
- 9. most reactive element
- 10. energy stored in chemicals
- 14. combination of of substances using symbols
- 15. reaction that takes place when two substances combine to create a new substance
- 20. oxygen symbol
- 21. experiment taken place in an open place
- 23. neutral particle in nucleus of atom
- 24. smallest part of a element
Down
- 1. the brain of atoms
- 3. number of protons in nucleus
- 4. change of state solid to liquid
- 8. formed when two non metals combine
- 11. what everything is made up of
- 12. mass of one atom of an element
- 13. atom that has become electrically charged
- 15. system taken place in a place where nothing can escape
- 16. invisible negative charged particle
- 17. something that resist electricity
- 18. group 1 of elements in the periodic table
- 19. amount of electricity something can conduct
- 22. combining of pure substances