types of reactions by harshit

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Across
  1. 9. one or group of atoms of a compound is replaced by another atom
  2. 11. white solid precipitate
  3. 12. symbolic representation of a chemical reaction
  4. 14. reactions where heat is released
  5. 15. two or more elements or compounds combine to form a product
  6. 16. two compounds exchange their ions to form a compound
  7. 17. oxidation of fats in food resulting bad taste
  8. 18. involves gain of hydrogen or loss of oxygen
Down
  1. 1. thin layer of zinc deposited on iron
  2. 2. equal number of atoms of elements on both sides
  3. 3. used for white washing
  4. 4. involves gain of oxygen or loss of hydrogen
  5. 5. substance undergoes a chemical change, forming a new substance
  6. 6. represents chemical reactions using names of reactants and products
  7. 7. represents chemical reactions with chemical formulas
  8. 8. reactions where heat is absorbed
  9. 10. one reactant breaks down into two or more products
  10. 13. eating up of metals due to exposure to air and moisture