Chemistry Vocabulary

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Across
  1. 1. a change without changing composition
  2. 5. element represented by K
  3. 7. element with one proton, and one energy level
  4. 11. a subatomic particle with a negative charge
  5. 12. a row on the periodic table
  6. 13. the unit used to measure atoms
  7. 16. arrangements of atoms.
  8. 18. the rings around an atom with electrons
  9. 19. element represented by Si
  10. 20. the smallest building block of the world
Down
  1. 2. the letters representing an element
  2. 3. a subatomic particle with a positive charge
  3. 4. electrons on the outer energy level
  4. 6. shows how many protons there are
  5. 8. a table with all elements arranged on it
  6. 9. change in a substance atoms arrangement
  7. 10. a subatomic particle with a neutral charge.
  8. 14. a column on the periodic table
  9. 15. element with 6 protons, and 2 energy levels
  10. 17. things organized on the periodic table