Chemical Reactions

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Across
  1. 5. Reaction A reaction in which two or more substances combine to form a compound.
  2. 6. the reaction that happens in an engine
  3. 8. The elements about to react
  4. 9. Reaction A type of reaction where energy is absorbed, such as an instant ice pack. More energy is needed to break the bonds of the reactants than is given off by forming the bonds of the products.
  5. 10. sign symbolizes a reaction
Down
  1. 1. what is produced in a reaction
  2. 2. A number placed in front of a product or reactant that tells the number of atoms reacting in an equation (by multiplication).
  3. 3. solid substance formed in a chemical reaction
  4. 4. Reaction A reaction in which a single compound breaks down to form two or more simpler substances
  5. 7. Reaction A type of reaction in which energy is released, such as the combustion of a car engine.