Clone of The REALLY BIG Chemistry Crossword Challenge

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Across
  1. 3. a negative subatomic particle discovered by Thomson
  2. 6. from gas to liquid
  3. 10. two or more elements chemically combined
  4. 11. a crystal that contains attached water molecule
  5. 13. when the forward and reverse reaction occur at the same rate
  6. 15. reactions that absorb energy
  7. 16. element with only one proton in the nucleus
  8. 18. it goes down as the volume goes up
  9. 22. ions made up of multiple atoms
  10. 24. a mixture where the components dissolve in each other
  11. 27. water is a ________ molecule
  12. 28. a separation technique that separates substances with different boiling points
  13. 29. substance shown before the arrow in a chemical equation
  14. 30. nuclear emission with the greatest penetration power
  15. 32. Mrs. Torres' favorite compound
  16. 33. letters that represent an element in the Periodic Table
  17. 35. it lowers the activation energy required to start a reaction
  18. 38. formula that shows the simplest ratio of elements in a chemical formula
  19. 39. from gas to solid
  20. 40. substance shown after the arrow in a chemical equation
  21. 41. horizontal arrangement of elements in the periodic table
Down
  1. 1. when electrons jump to higher energy levels
  2. 2. from solid to gas
  3. 3. reactions that release energy
  4. 4. contains protons and neutrons
  5. 5. the highest energy electron shell
  6. 7. from liquid to solid
  7. 8. combines two light nuclei to form a heavier nucleus
  8. 9. small number used to state the ratio of elements in a chemical formula
  9. 12. a nuclear emission containing two protons and two neutrons
  10. 14. when electrons are at the lowest energy levels available
  11. 15. a measure of the disorder in a system
  12. 17. the basic unit of matter
  13. 19. homogeneous mixture
  14. 20. a nuclear emission with no mass and a negative charge
  15. 21. measures the average kinetic energy in a substance
  16. 23. the energy needed to start a reaction
  17. 24. the time that it takes for half the atoms in a given sample to decay
  18. 25. measures concentration
  19. 26. number used to balance chemical equations
  20. 31. it goes up as the temperature goes up
  21. 34. 6.02 x 10^23
  22. 36. two or more pure substances physically combined
  23. 37. a large nucleus splits into two smaller nuclei