Matter & Energy

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Across
  1. 2. basic building block of matter
  2. 4. forms of an element that have the same atomic number but different atomic masses
  3. 8. heat
  4. 9. an atom or group of atoms with a charge
  5. 10. energy associated with motion
  6. 12. matter than cannot be broken down into simpler substances
  7. 13. carbon-based compound
  8. 14. the capacity to do work
Down
  1. 1. change in the chemical composition of a substance
  2. 3. combination of two or more atoms of the same or different elements held together
  3. 5. stored energy
  4. 6. change in matter where there is no change in chemical composition
  5. 7. anything that has mass and takes up space
  6. 11. combinations of two or more different elements