Chemistry

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Across
  1. 2. a compound that produces OH- ions or electrons or accepts protons.
  2. 3. a phase transition in which a substance is transferred directly from a solid state to a gas state.
  3. 5. a material that allows the electric current to flow in one or more directions.
  4. 6. a gas that is most abundant in the atmosphere of Earth.
  5. 8. a substance that forms a complex around a central atom.
  6. 10. an electrode where oxidation occurs
Down
  1. 1. a substance that lowers the activation energy of a chemical reaction.
  2. 4. a molecule that exists for a short time in a chemical reaction before turning into the product.
  3. 7. a process that gives off heat.
  4. 9. a compound that exists in forms with different atoms but the same molecular weight.