Scientific Crossword

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Across
  1. 4. same # of protons, different # of neutrons
  2. 7. an atom that gained electrons
  3. 8. where nuclear energy is stored
  4. 9. two elements or compounds form one new compound
  5. 11. the energy of movement
Down
  1. 1. solid changes directly to gas
  2. 2. gas changes directly to solid
  3. 3. when heat is transfered by two things making physical contact
  4. 5. the weight of a proton
  5. 6. the law of conservation of mass says that all chemical equations must be:
  6. 10. distance traveled in a unit of time