Chemistry Crossword

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Across
  1. 2. The chemical symbol for this element is Au
  2. 4. The building blocks of matter
  3. 6. The element with 6 protons
  4. 11. A neutrally charged particle found in the nucleus
  5. 12. how heavy an element is, the ______ mass
  6. 13. A negatively charged ion
  7. 14. A negatively charged particle that orbits the nucleus
  8. 15. These go around the nucleus and electrons move around in them
  9. 17. Similar to atoms BUT have a different number of electrons
  10. 18. The periodic table of _________
  11. 19. When an atom _______ electrons this makes an anion
Down
  1. 1. The first element in the periodic table
  2. 3. A positively charged particle found in the nucleus
  3. 5. A positively charged ion
  4. 7. The centre of an atom that contains protons and electrons
  5. 8. When an atom ______ electrons this makes a cation
  6. 9. The element that has 20 electrons
  7. 10. The name of the diagrams which show what an atom or ion looks like
  8. 16. Number shows how many protons and electrons an atom has