Chapter 6&7 Vocab

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