Structure of matter

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Across
  1. 5. occurs when water molecules stick to one another
  2. 9. your teacher's first name
  3. 10. state of matter with definite shape and volume
  4. 11. location where electrons are found outside the atoms nucleus
  5. 13. matter that has the same composition throughout
  6. 15. negatively charged particle outside the nucleus
  7. 16. your teacher's favorite pie
  8. 17. positively charged particle in the nucleus
  9. 18. amount of space an object takes up
  10. 20. amount of matter in an object
  11. 22. chart organizing elements by their properties
  12. 23. your teacher's favorite sweet treat
  13. 24. the number of grandchildren your teacher has
Down
  1. 1. the number of children your teacher has
  2. 2. the smallest part of an element that still has the properties of that element
  3. 3. the number of dogs your teacher has
  4. 4. definite volume but takes the shape of its container
  5. 6. neutral particle in the nucleus
  6. 7. no definite shape or volume
  7. 8. two or more atoms bonded together
  8. 12. a pure substance made of only one kind of atom
  9. 14. center of the atom containing protons and neutrons
  10. 19. anything that has mass and takes up space
  11. 21. number of protons in an atom