Chemical Bonds

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Across
  1. 3. One chemical substance is transformed into one or more different substances.
  2. 6. Atoms with positive charge.
  3. 7. Chemical reactions that release energy by light or heat to form products.
  4. 9. The complete transfer of some electrons from one atom to another.
  5. 10. Symbolic representation of a chemical reaction in the form of symbols.
  6. 11. Atoms with neutral charge.
Down
  1. 1. Atoms with negative charge.
  2. 2. Groups of atoms held together with chemical bonds.
  3. 4. Chemical reactions in which the reactants absorb heat energy from the surroundings to form products.
  4. 5. Mutual sharing of one or more pairs of electrons between two atoms.
  5. 8. The tendency of atoms to prefer to have eight electrons in the valence shell.