CHAPTER 8

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Across
  1. 2. represents the reactants and products of a chemical reaction by their symbols or formulas
  2. 6. a substance combines with oxygen, releasing a large amount of energy in the form of light and heat
  3. 8. is a small whole number that appears in front of a formula in a chemical equation
  4. 9. two or more substances combine to form a new compound
  5. 12. one element replaces a similar element in a compound
  6. 13. A solid that is produced as a result of a chemical reaction in solution and that separates from the solution
Down
  1. 1. the ions of two compounds exchange places in an aqueous solution to form two new compounds
  2. 3. a single compound undergoes a reaction that produces two or more simpler substances
  3. 4. is a list of elements organized according to the ease with which the elements undergo certain chemical reactions
  4. 5. an equation in which the reactants and products in a chemical reaction are represented by words
  5. 7. the decomposition of a substance by an electric current is called electrolysis
  6. 10. represents, with symbols and formulas, the identities and relative amounts of the reactants and products in a chemical reaction
  7. 11. is the process by which one or more substances are changed into one or more different substances