Whee

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Across
  1. 2. the center of an atom
  2. 9. positively-charged subatomic particle
  3. 10. how easily a substance will chemically react to another substance
  4. 11. same, identical
  5. 12. a substance's ability to burn
  6. 14. how much matter is in a certain amount of space
  7. 18. what something is made of
  8. 21. show
  9. 23. information that supports a claim
  10. 27. how much matter something is made of
  11. 29. a change that changes the identity of a substance
  12. 30. able to be bent into a new shape
  13. 31. help
  14. 34. measuring this type of property might change the identity of a substance
  15. 36. something we use to represent something else
  16. 37. a change that does not change the identity of a substance
  17. 39. a property that can be measured without changing a substance's identity
  18. 40. a vertical section, especially on the periodic table
  19. 41. different from, unique
  20. 42. a substance that allows heat or electricity to pass through it easily
Down
  1. 1. 100%, no filler, nothing but
  2. 2. uncharged subatomic particle
  3. 3. the smallest piece of an element that still has all the properties of that element
  4. 4. elements found on the "staircase" on the periodic table
  5. 5. a solid that is produced when two liquids react with each other
  6. 6. breaks when you try to bend it
  7. 7. two or more substances that are physically joined, not chemically combined
  8. 8. how much space something takes up
  9. 13. pattern
  10. 15. negatively-charged subatomic particle
  11. 16. a group of things we're talking about
  12. 17. cannot be divided any further
  13. 19. repeating in a regular pattern
  14. 20. piece, part
  15. 22. a formal inquiry or systematic study
  16. 24. a substance that participates in a chemical reaction
  17. 25. keeping the same amount
  18. 26. in this type of mixture, each part of the mixture has the same properties: they have been evenly divided up
  19. 28. in this type of mixture, different parts of the mixture have different properties: they have not been evenly divided up
  20. 32. a substance produced in a chemical reaction
  21. 33. change
  22. 35. a combination of two or more elements joined by chemical bonds
  23. 38. build