Chapter 6 & 7 vocabulary crossword :)

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Across
  1. 1. a representation of a chemical reaction in which the reactants and products are expressed as formulas
  2. 6. a chemical reaction in which two compounds exchange positive ions and form new compounds
  3. 7. the attraction between a metal cation and the shared electrons that surround it
  4. 8. the force that holds cations and anions together
  5. 11. the force that holds atoms or ions together as a unit
  6. 14. numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product
  7. 15. a chemical reaction in which one element takes the place of another element in a compound
  8. 16. new substances formed as a result of a chemical reaction
  9. 18. an ion with a positive charge
  10. 19. a chemical reaction in which two or more substances react to form a single substance.
  11. 20. an atom or group of atoms that has a positive or negative charge
Down
  1. 2. a chemical bond in which two atoms share a pair of valence electrons
  2. 3. notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  3. 4. a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. 5. a neutral group of atoms that are joined together by one or more covalent bonds
  5. 9. a chemical reaction in which a compound breaks down into two or more simpler substances
  6. 10. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  7. 12. a substance that undergoes change in a chemical reaction
  8. 13. the energy stored in chemical bonds
  9. 17. an ion with a negative charge