Elements and the Periodic Table

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Across
  1. 3. table Is an arrangement of elements showing the repeating
  2. 4. conductivity Is the ability of an object to transfer heat
  3. 7. A substance that can conduct electric current under
  4. 12. A metal due to a chemical reaction in the environment
  5. 13. The positively charged particles in an atom's nucleus
  6. 14. Is an element that lacks most of the properties of a metal
Down
  1. 1. molecule A molecule consisting of two atoms
  2. 2. Element combines or reacts with other substances
  3. 5. That atoms contain negatively charged particles
  4. 6. Is shiny and reflective
  5. 8. conditions
  6. 9. of their properties
  7. 10. It is found in group 17 and it means salt forming
  8. 11. This particle was hard to find, it has no electric charge
  9. 12. symbol A one or two letter representation of an element
  10. 15. number The sum of protons and neutrons in the nucleus of an