Chapter 11

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Across
  1. 4. whether one metal will displace another metal from a compound
  2. 6. representation of a chemical reaction
  3. 7. a chemical change in which a single compound breaks down into two or more simpler products
  4. 9. chemical change in which one element replaces a second element in a compound
  5. 11. small whole numbers that are placed in front of the formulas in an equation in order to balance it
Down
  1. 1. chemical change involving an exchange of positive ions between two compounds
  2. 2. chemical change in which an element or a compound reacts with oxygen, often producing energy in the form of heat and light
  3. 3. chemical change in which two or more substances react to form a single new substance
  4. 5. each side of the equation has the same number of atoms of each element and mass is conserved
  5. 8. substance that speeds up the reaction but is not used up in the reaction
  6. 10. equation- chemical equation that does not indicate the relative amounts of the reactants and products