Chemistry

123456789101112131415
Across
  1. 2. A reaction that can occur when atoms bump into one another
  2. 4. A variations of an element that have different numbers of neutrons
  3. 6. Verticle column of periodictable
  4. 12. The group 2 elements are known as...
  5. 13. Metals and non-metals bonding together
  6. 14. The smallest particles that makes up of everything in the universe
  7. 15. What is at the centre of each atoms
Down
  1. 1. The name for electrons on the outer shells.
  2. 3. Elements with symbol P
  3. 5. An element that have a full outer shells but does not contains 8 valence electrons
  4. 7. The biggest and most reactive metal atoms in group 1
  5. 8. Non-metals that are in group 17
  6. 9. A table that lists all the known elements
  7. 10. Another name for noble gases
  8. 11. One of periodic table special blocks of elements