science

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Across
  1. 2. liquid to gas
  2. 3. cant be broken down
  3. 9. greater mass than proton
  4. 12. not solid or liquid
  5. 13. unusual number of neutrons
  6. 16. display of chemicals
  7. 19. same amount of substances throughout
  8. 21. temp solid turns to liquid
  9. 23. amount of matter in a object
  10. 25. solid to gas
  11. 26. how easily something combusts
  12. 29. where electrons are found
  13. 30. mix of metals and nonmetals
  14. 31. fast moving particles
  15. 32. change of arrangement of atoms
  16. 34. lacks characteristics of metal
  17. 35. the middle of a atom
  18. 38. mass of a unit of volume
  19. 39. characteristics of matter
  20. 40. capacity to undergo reaction
  21. 42. consistent properties
Down
  1. 1. number of protons in the atom
  2. 4. how easily materials ignite
  3. 5. solid to liquid
  4. 6. total of proton and neutrons
  5. 7. kinetic energy
  6. 8. liquid to solid
  7. 10. energy in a system
  8. 11. temp liquid turns to air
  9. 14. vertical column
  10. 15. smallest unit of matter
  11. 17. negatively charged
  12. 18. char. observed during reaction
  13. 20. substance is same
  14. 22. not solid or gas
  15. 24. not liquid or gas
  16. 26. air to liquid
  17. 27. horizontal row
  18. 28. positively charged
  19. 33. mass of a atom
  20. 36. made from other substances
  21. 37. solid that forms out of a solution
  22. 41. forms positive ions