Chemical Reactions

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Across
  1. 2. According to the Collision Theory, molecules must ________ in order for a chemical reaction to occur.
  2. 5. In this type of reaction, energy is being released in the surrounding
  3. 6. During a chemical reaction, _______ are broken and reformed to produce new substance.
  4. 8. In this type of reaction, the energy supplied is greater than the energy released
  5. 9. __________ energy is the energy required to break the bonds in the reactants.
  6. 10. There is a/an _______ in temperature observed in an endothermic reaction.
Down
  1. 1. New substance formed in a chemical reaction
  2. 3. A substance that can help speed up a reaction.
  3. 4. In an exothermic reaction, the energy of the products is _______ than the energy of the reactants.
  4. 7. The starting materials in a chemical reaction