Perfect 10

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Across
  1. 3. the number of protons in the nucleus of an atom
  2. 6. substance which does not
  3. 7. an element whose properties are intermediate between metals
  4. 8. a element
  5. 9. able to be deformed without losing toughness
Down
  1. 1. the quality of power
  2. 2. layout of all the chemical elements
  3. 4. soft and easy to break
  4. 5. an element of substances that is not a metal
  5. 7. easy influenced