Across
- 2. center of atom
- 4. smallest. Particle in chemical elements
- 5. located to the left of Halogen
- 6. concealed reaction
- 11. tells how many rings
- 12. substance that takes part in and undergoes change
- 14. rings around the nucleus
- 15. forms positive irons
- 16. two or more elements combined
- 17. outer part of the atom
- 18. name of the atom
- 20. mass of atomic particle
- 22. atomic number decreases from left to right
- 24. mixture of those metals and nonmetals
Down
- 1. he made the Periodic table
- 3. negative electron
- 7. represents another thing
- 8. can be changed from one form to another
- 9. neutral electron
- 10. Neon, Argon, Krypton, Radon
- 13. outside reaction
- 19. positive electron
- 20. Solid, Liquid, and gases are made up of these.
- 21. column of elements up the P.T
- 22. made after reactions
- 23. thin coat of gold and silver or another metal