Chemistry Crossword

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Across
  1. 3. Occurring without definite aim
  2. 6. Change from solid to liquid without passing through the liquid state
  3. 8. Smallest particle of an element
  4. 11. Uses electricity to break down compounds into simpler substances
  5. 13. Something that binds , holds something together
  6. 15. A reactions which results in the increase in surrounding temperature
  7. 18. Primary charge carriers in electric current
  8. 19. Neat and regular sequence
  9. 20. Pressed together, dense, compact
Down
  1. 1. Substance that cannot be broken down any further
  2. 2. Magnetic force between 2 oppositely charged bodies causing them to draw together
  3. 4. Substance that undergoes a chemical change in a given reaction
  4. 5. A reaction which results in the decrease in surrounding temperature
  5. 7. A proton or a neutron
  6. 9. Can be returned to original state
  7. 10. An electrically charged atom formed by the loss or gain of one or more electrons
  8. 12. Process which causes rusting & spoiling of fresh food
  9. 14. Change from gas to solid without passing through the liquid state
  10. 16. 2 or more elements involved
  11. 17. 2 or more atoms chemically combined together (a group of atoms)