Chemical Equation and Reaction - By Shehran 10-L

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Across
  1. 1. A chemical reaction in which two compounds exchange positive ions and form two new compounds
  2. 3. Reactions in which oxidation and reduction take place together
  3. 4. The spoiling of food caused by the oxidation of fats and oils present in it
  4. 8. Deterioration of metals by the reaction of water and oxygen with the formation of an oxide layer on the metal surface
  5. 12. A reaction that releases energy in the form of light or heat
  6. 14. When two or more reactants combine with each other to form a new product
  7. 15. A process in which a chemical substance changes because of the addition of oxygen
Down
  1. 2. A reaction in which heat is absorbed from the surroundings
  2. 5. A reaction in which a compound breaks down into two or more simpler substances
  3. 6. A reaction in which a more reactive element displaces a less reactive element from its compound
  4. 7. A substance(chemical) which slows down oxidation
  5. 9. A substance that undergoes change in a chemical reaction
  6. 10. Equations with simply the chemical formulas of the products and reactants, no mention of state, and no atom balancing on either side of the equation
  7. 11. The insoluble solid which settles down after the completion of the chemical reaction
  8. 13. Substance that speeds up a chemical reaction