Physical Science Chapter 7 Vocabulary

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Across
  1. 4. This is a type of reaction in which two compounds appear to exchange ions
  2. 7. The products and reactants of a chemical reaction contain the same types of __________
  3. 9. Chemical reactions always involve changes in __________
  4. 13. Energy that is stored in the form of chemical bonds
  5. 14. A substance that forms in a chemical reaction
  6. 16. This is a type of reaction in which at least one reactant is oxygen and at least one product will contain atoms of oxygen
  7. 17. A __________ equation uses symbols to represent a chemical reaction and shows the relationship between the reactants and products of a reaction
  8. 18. This is a type of chemical reaction in which energy is released to the surroundings as heat
Down
  1. 1. This is a type of reaction in which substances are broken apart
  2. 2. When the number of atoms of each element on the right side of the equation matches the number of atoms of each element on the left side, the chemical equation is said to be ____________
  3. 3. In all chemical reactions, _______ remains the same
  4. 5. A number that shows the relative amount of a compound in a reaction
  5. 6. This is a type of chemical reaction in which more energy is needed to break the bonds in the reactants than is given off by forming bonds in the products
  6. 8. This is a type of reaction in which the atoms of one element appear to move into a compound and atoms of the other element appear to move out
  7. 10. A substance that participates in a chemical reaction
  8. 11. Using _________ models is a way which can be used to show how the atoms are rearranged during the reaction
  9. 12. This is a type of reaction in which multiple substances combine to form a new compound
  10. 15. A _______ equation is a way to show the full name of the products and reactants