Science Crossword

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Across
  1. 2. co2
  2. 5. that element that has 2 atoms
  3. 10. a element that has 101 atoms
  4. 12. a group of elements that are not reactive at all
  5. 13. a element that is known as 'Mg'
  6. 14. a small number that tells how many of this element are bonded together
  7. 15. the group of elements that have Thorium
  8. 17. elements that are not metals
  9. 18. a noble Gas that is simplified into 'Ne'
  10. 19. h20
Down
  1. 1. a table where all the elements are categorized
  2. 3. oxygen
  3. 4. ozone
  4. 6. a word that has 'mole' and 'cule' combined
  5. 7. elements are categorized because of similar ___________
  6. 8. that element that has the most atoms
  7. 9. a element that has 13 atoms
  8. 11. the group of elements that are listed on top of 'Actinides'
  9. 16. electron the number of electrons in a element's outer shell
  10. 20. the reactivity decreases if you move to the _________ of the periodic table