Chemical reactions and equations crossword puzzle ARYAN SHARMA 10-R

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  1. 3. The substance that is formed as a result of a chemical reaction.
  2. 7. The type of chemical reaction in which heat is given out.
  3. 9. The process of breaking down a compound into simpler substances by heating it.
  4. 11. MgO
  5. 12. A substance that speeds up the rate of a chemical reaction without itself undergoing any permanent chemical change.
  6. 13. reactions in which insoluble salts are formed
  7. 15. A chemical equation in which the number of atoms of each element is the same on both sides of the equation.
Down
  1. 1. often called as limestone , marble , chalk
  2. 2. When two or more substances combine to form a single product
  3. 4. A chemical reaction in which a more reactive element displaces a less reactive element from its compound.
  4. 5. The type of chemical reaction in which a single compound breaks down into two or more simpler substances.
  5. 6. The type of chemical reaction in which energy is absorbed.
  6. 8. Gain of oxygen , loss of hydrogen and electron
  7. 10. The type of chemical reaction in which two compounds exchange ions to form two new compounds.
  8. 12. When a metal is attacked by substances around it such as moisture , acids present in atmosphere
  9. 14. The substance that undergoes a chemical change in a reaction.