Chemical Reactions

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Across
  1. 1. A characteristic of a substance that describes how it can form a new substance. (chemical________)
  2. 6. A chemical reaction that requires heat energy in order to proceed. (___________reaction)
  3. 8. A substance consisting of more than one element. (chemical________)
  4. 9. A substance that reacts with another substance in a chemical reaction.
  5. 12. The number before a chemical formula that shows how many molecules are involved in a chemical reaction.
  6. 13. A substance that slows down a chemical reaction or prevents it from occurring.
  7. 14. Any change in size, shape, or state of matter in which the identity of the substance remains the same.
Down
  1. 2. A chemical reaction in which energy is primarily given off in the form of heat. (__________reaction)
  2. 3. A number written slightly below and to the right of a chemical symbol that shows how many atoms of an element are in a compound.
  3. 4. A process where substances react with each other and form new substances with other properties. (chemical________)
  4. 5. A substance formed in a chemical reaction.
  5. 7. a chemical compound with oxygen.
  6. 8. A change of one substance into a new substance (chemical_____)
  7. 10. The loss of electrons from the atoms of a substance.
  8. 11. A substance that speeds up a chemical reaction without being permanently changed itself.