Science

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Across
  1. 1. - Atom-
  2. 5. Gravity-
  3. 6. down
  4. 8. - Reactivity -
  5. 9. - Nonmetal -
Down
  1. 2. - Electron-
  2. 3. Neutron-
  3. 4. - Element-
  4. 5. - Noble -
  5. 7. - Metal -