Chemistry Project

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Across
  1. 2. Near each other
  2. 5. Closed-packed
  3. 7. The process where a substance changes directly from a solid to a gas without becoming a liquid first.
  4. 12. Molecules in solid, liquid and gas
  5. 13. A subatomic particle found in the nucleus of an atom, alongside protons.
  6. 14. a pure substance that cannot be broken down into simpler substances by chemical means.
  7. 15. solid to liquid
  8. 18. Horizontal(Periodic Table)
  9. 20. made up of 2 or more elements chemically combined
Down
  1. 1. atomic number is 19
  2. 3. The passive movement of particles from an area of higher concentration to an area of lower concentration.
  3. 4. Made up of 2 or more subtances not chemically combined
  4. 6. Far from each other
  5. 8. Comparing of the same element
  6. 9. Electrically neutral group of two or more atoms that are chemically bonded together.
  7. 10. A subatomic particle with a positive electric charge found in the nucleus of every atom.
  8. 11. liquid to solid
  9. 16. liquid to gas but only occurs on the surface
  10. 17. Liquid to gas
  11. 19. A subatomic particle with a negative electric charge that orbits the nucleus of an atom.