Elements And The Periodic Table

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Across
  1. 2. Is an element that lacks most of the properties of a metal
  2. 3. atom
  3. 6. Is a arrangement of elements showing the repeating
  4. 9. Is the ability of an object to transfer heat
  5. 12. the environment
  6. 13. conditions
  7. 15. The deterioration of a metal due to a chemical reaction
  8. 16. An element combines, or reacts, with other substances
  9. 17. That atoms contain negatively charged particles
  10. 18. of their properties
  11. 19. Is shiny and reflective
Down
  1. 1. Which is the sum of the protons and neutrons in
  2. 4. It mean salt forming
  3. 5. A molecule consisting of two atoms
  4. 7. Are substances that can conduct electric current under
  5. 8. An element is the average mass of all the isotopes of
  6. 9. element
  7. 10. A one or two letter representation of an element
  8. 11. This particles was hard to find because it has no
  9. 14. Positively charged particles in an atom's nucleus
  10. 17. charge