Elements and the Periodic Table

Edit Answers
1234567891011121314151617181920
Across
  1. 4. A column of elements
  2. 5. An atom where protons=neutrons
  3. 7. A row on the periodic table
  4. 11. Iron, aluminum, magnesium and nickel
  5. 12. For example O, H, Ag, Mg and Ca
  6. 13. A pure substance composed of two or more different elements
  7. 14. Given in the top left corner of every square in the periodic table
  8. 15. Neon is an example
  9. 17. A drawing that shows the locations of the protons and neutrons and electrons in an atom
  10. 18. The mass of an atom
  11. 19. A particle with no charge
  12. 20. Cannot be broken down into a simpler substance
Down
  1. 1. Nitrogen and oxygen
  2. 2. Calcium is an example
  3. 3. Number of protons and neutrons in the atoms nucleus
  4. 6. A positively charged particle
  5. 8. Iodine is an example
  6. 9. A negatively charged particle
  7. 10. Sodium is an example
  8. 16. Boron is an example