science

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Across
  1. 6. The rest of the air is made of this, hydrogen and neon
  2. 7. 21% of the air is made of this
  3. 8. It can cause carpet burn
  4. 10. In the periodic table it is Ag
Down
  1. 1. The rest of the air is made from this, hydrogen and carbon dioxide
  2. 2. the rest of the air is made from this, neon and carbon dioxide
  3. 3. In the periodic table i am Br
  4. 4. 78% of the air is made of this
  5. 5. It is exothermic
  6. 9. i am a non-contact force