Chemical reactions

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Across
  1. 3. Is an another term for burning
  2. 5. A substance used at the beginning of a chemical reaction
  3. 6. Is a white powder formed due to a reaction between magnesium and oxygen
  4. 7. Produces a brown colour
Down
  1. 1. Produces carbon dioxide and alcohol
  2. 2. Is a technique used in cooking
  3. 3. a procedure that produces new chemicals
  4. 4. A substance obtained at the end of a chemical reaction