Chemistry Crossword

123456789101112131415161718192021222324
Across
  1. 1. clump of protons and neutrons, in the middle of an atom
  2. 3. mix between metal and non-metal
  3. 5. substance made of 2+ different kinds of atoms
  4. 6. energy is released, heat
  5. 7. a neutral charge
  6. 8. outer circle of of electrons
  7. 10. what comes out of a chemical reaction
  8. 11. on the periodic table, vertical column down
  9. 12. number of protons and neutrons in the nucleus
  10. 13. the smallest component of a chemical
  11. 16. energy is absorbed, cool
  12. 17. combination of atoms together
  13. 18. made the first periodic table
  14. 21. mass of an element
  15. 22. reaction when a layer of metal is bonded to another substance, typically another metal
  16. 24. the two letters to represent the element
Down
  1. 1. does not mix with other elements, neon & helium are examples
  2. 2. an isolated system is neither created nor destroyed by chemical reactions
  3. 4. what you out into a chemical reaction
  4. 7. brittle, not malleable, not a good conductor of electricity
  5. 9. a positive charge
  6. 14. circle of electrons around the nucleus (2,8,8,2)
  7. 15. good conductor of electricity, malleable
  8. 19. a negative charge
  9. 20. pure subastance, periodic table
  10. 23. on the periodic table, horizontal rows across