Across
- 2. the name for the group 7 elements
- 4. Everything is made up of ...
- 6. the group 0 elements are ___
- 7. the group 1 elements get ____ reactive going down
- 9. this gas is lighter than air and makes your voice squeaky
- 13. the symbol O stands for
- 14. the name for the reactions the halogens do
- 18. two or more atoms/compounds not chemically bonded
- 19. a substance made up of two or more atoms chemically bonded
- 20. these are sonorous, ductile & can conduct
- 22. Rutherford shot these particles at gold foil
- 23. subatomic particle with a neutral charge
- 24. how many electrons can fit on the first energy level
- 27. the group 0 elements are the ___ gases
- 28. the formula for table salt
- 29. the type of bonding found between 2 or more non-metals
- 30. another word for energy levels
Down
- 1. the group 1 elements are called the ___ metals
- 3. contains protons and neutrons
- 5. the name for horizontal rows in the periodictable
- 8. the name for vertical columns in the periodictable
- 10. JJ Thomson discovered this subatomic particle
- 11. something that cant dissolve
- 12. how many electrons can fit on the second shell
- 15. this is formed when an atom looses or gains and electron
- 16. the group 7 elements get ___ going down
- 17. James ____ discovered the neutron
- 20. these are found to the left, to the left
- 21. the pH of a neutral substance
- 25. sub atomic particle with a positive charge
- 26. this element is in, coal, diamond and graphite