Chemical Reactions

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Across
  1. 4. A small whole number that appears in front of a formula in a balanced chemical equation
  2. 6. A chemical change that involves the exchange of positive ions between two compounds
  3. 8. A chemical reaction that does not indicate the relative amounts of reactants and products
  4. 10. A chemical change in which a single compound is broken down into two or more simpler products
  5. 11. An ion that is not directly involved in a chemical reaction
  6. 12. A chemical change that involves the exchange of positive ions between two ionic compounds in a solution and forms a precipitate
  7. 13. A substance that increases the rate of reaction by lowering the activation-energy barrier
  8. 15. A chemical equation in which mass is conserved
Down
  1. 1. An expression representing a chemical reaction
  2. 2. A chemical change in which one element replaces a second element in a compound
  3. 3. A list of elements in order of decreasing activity
  4. 5. A chemical change in which an element or compound reacts with oxygen
  5. 7. A chemical change in which two or more substances react to form a single new substance
  6. 9. An equation that shows dissolved ionic compounds as dissociated free ions
  7. 14. An equation for a reaction in solution showing only those particles that are directly involved in the chemical change