chemical Elements

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Across
  1. 4. is used in some smoke detectors, as portable gamma-ray source in radiography, to help to create flat glass.
  2. 5. It was discovered in 1791 and named in 1795.
  3. 6. Main element used in organisms` breathing
  4. 7. is the eighth most abundant element in the universe
  5. 8. is best at attracting an electron to form a chemical bond
  6. 9. The most abundant element in the universe
Down
  1. 1. does not attract bonding electrons
  2. 2. The Most Expensive Elements
  3. 3. is the most reflective metal
  4. 7. Phase at room temperature: Liquid.