Chemistry Crossword

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Across
  1. 3. neutral particle in the nucleus of an atom
  2. 5. group of atoms joined by covalent bonds
  3. 6. vertical column of elements in the periodic table
  4. 7. table that has all the elements
  5. 13. a new substance formed by reactants
  6. 15. slow chemical reaction
  7. 16. a reaction that gives off heat
  8. 18. smallest part of an element
  9. 19. this elements symbol is N
  10. 22. a subatomic particle with a negative charge
  11. 25. center of an atom
Down
  1. 1. this elements symbol is Ne
  2. 2. a pure substance formed when a metal and non metal combine
  3. 4. the number of the element on the table of elements
  4. 8. 2 or more atoms that create a substance
  5. 9. the stuff we breathe
  6. 10. mass of an atom
  7. 11. a reaction that absorbs heat
  8. 12. this element can be found in a banana
  9. 14. an organic catalyst
  10. 17. this elements symbol is H
  11. 20. a subatomic particle with a positive charge
  12. 21. an organic catalyst
  13. 23. a substance speeds up a chemical reaction
  14. 24. this elements symbol is Au