Evolution

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Across
  1. 2. the center of the atom (where the protons and neutrons are)
  2. 5. the number that tells you how many protons are in an element
  3. 7. the fundamental building block of all matter
  4. 10. the simplest form of matter that has a characteristic set of properties
  5. 11. the energy matter has because of its motion
  6. 12. Anything that has mass and takes up space(volume)
Down
  1. 1. is the stored energy in matter due to its position relative to other matter
  2. 3. the energy stored in the chemical bonds that hold atoms together
  3. 4. one or two letters representing an element example: H or Cl
  4. 6. 2 or more atoms that are combined
  5. 8. the total kinetic energy of all the particles that make up the matter
  6. 9. The densest form of H2O
  7. 10. the capacity to move, do work, change matter, or produce heat