Unit 1: Atoms

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Across
  1. 2. the state of matter whose particles are spread very far apart
  2. 3. a group of atoms bonded together
  3. 5. element with an atomic number of 6
  4. 6. the element with 12 protons
  5. 9. negatively charged particles that orbits the nucleus of the atom
  6. 10. ripping a piece of paper in half is a ________ ________
  7. 13. particles in the nucleus of the atom that is not charged
  8. 15. table that shows all the elements
  9. 16. the element with the atomic number of 7
  10. 17. number of protons is = to the ______________ __________
  11. 18. the amount of matter in an object
Down
  1. 1. the element with an atomic number of 1
  2. 4. process in which atoms rearrange themselves to form a new substance
  3. 5. substance made up of 2 or more elements
  4. 7. the state of matter whose particles are packed closely together is a ___________
  5. 8. the element with 7 protons
  6. 11. protons + neutrons = __________________
  7. 12. positively charged particles in the center of the nucleus
  8. 14. smallest unit of a chemical element