Chemical Reactions by Ayaan 10 L

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Across
  1. 2. A reaction where one compound breaks down into simpler substances
  2. 4. A reaction that absorbs heat energy from the surroundings
  3. 7. The gain of electrons or loss of oxygen in a chemical reaction
  4. 10. A reaction where one element replaces another in a compound
  5. 13. A representation of a chemical reaction using symbols and formulas
  6. 14. The starting substance that takes part in a chemical reaction
  7. 15. A reaction where two or more substances join to form a single product
Down
  1. 1. The spoilage of fats and oils when they react with oxygen
  2. 3. The loss of electrons or gain of oxygen in a chemical reaction
  3. 5. A reaction that releases heat energy to the surroundings
  4. 6. A solid that forms and settles out of a liquid mixture during a reaction
  5. 8. A substance that increases the rate of a chemical reaction without being consumed in it
  6. 9. A state in a chemical equation where the number of atoms of each element is equal on both sides
  7. 11. The new substance formed as a result of a chemical reaction
  8. 12. The slow destruction of metals due to reaction with air and moisture