chemistry

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Across
  1. 3. any solid liquid or gas
  2. 4. the smallest part of matter
  3. 7. the number of protons and electrons
  4. 9. how much space an object takes up
  5. 12. the mass of an element
Down
  1. 1. A thing that has flying molecules
  2. 2. A particle in the nucleus of the atom with a positive charge
  3. 5. A thing that that has moving molecules
  4. 6. A chargeless particle in the nucleus of the atom
  5. 8. the amount of matter in an object
  6. 10. A pure substance made of only one type of atom
  7. 11. the mass of one atom
  8. 13. a thing with tight molecules
  9. 14. A particle in the orbit of the atom with a negative charge