Chemistry Final Crossword

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Across
  1. 2. area around a nucleus where electrons are mostly found
  2. 4. the resistance to flow by a fluid
  3. 6. the center of the atom
  4. 10. smallest unit of an element
  5. 13. a change of one substance to another
  6. 14. a change in size, shape, or state
  7. 15. A substance in which the atoms of 2 or more elements are combined.
  8. 18. particles in an atom with a positive charge
  9. 19. A process for separating substances by evaporating a liquid and recondensing its vapor.
  10. 20. particles in an atom that have no charge
  11. 22. when all the atoms in a substance have the same identity
  12. 24. a homogeneous mixture of two or more substances
  13. 25. a table filled with elements in order of atomic numbers, etc.
Down
  1. 1. smaller particles in protons and neutrons
  2. 3. This number is the sum of the number of protons and neutrons in an atom
  3. 5. can be hammered
  4. 7. a type of matter with a fixed composition
  5. 8. Ability of a fluid to exert an upward force on an object immersed in it.
  6. 9. substances that react
  7. 11. force exerted per area
  8. 12. particles in an atom with a negative charge
  9. 16. a unit of pressure
  10. 17. atoms of the same element that have different numbers of neutrons
  11. 21. Number of protons in an atom
  12. 23. Spreading of particles throughout a given volume until they are distributed.