redox reaction

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Across
  1. 2. has the symbol Na
  2. 3. a chemical reaction in which a substance reacts with oxygen - the reaction is exothermic
  3. 6. The number of electrons gained or lost by an atom in a redox reaction
  4. 8. a reaction involving both reduction and oxidation
  5. 9. agent a substance that reduces another substance during a redox reaction and is itself oxidised during reaction
  6. 10. a term used to describe oxidised organic material (food) - usually involving a bad smell
Down
  1. 1. The opposite of oxidation
  2. 4. If an element loses electrons in a reaction, is it oxidized or reduced?
  3. 5. our chemistry teacher
  4. 7. is a decrease in oxidation number of an atom or ion during reaction