Chemistry

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Across
  1. 3. What is the main substance in burning reaction?
  2. 6. This is one of the most spread gas
  3. 7. Another name for unsaturated hydrocarbon
  4. 8. When we talk about radical that gravitates to particle with negative charge, we called it ...
  5. 9. This is name of chemical element that is number 29 in periodic table
Down
  1. 1. The lightest chemical element called...
  2. 2. It is name of person who created one of the most popular chemical table
  3. 4. The rule for electrophilic addition reaction was created by this man
  4. 5. What is chemisrty teacher`s name?
  5. 6. It consists of protons and neutrons