Chemistry

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Across
  1. 4. a substance that speeds up a reaction without being consumed
  2. 6. a method of determining concentration by controlled addition of a reagent
  3. 7. a solid formed from a solution during a reaction
  4. 9. the decomposition of a substance by electric current
  5. 10. a compound with the same formula but a different structure
Down
  1. 1. the loss of electrons or an increase in oxidation state
  2. 2. the study of matter using its interaction with electromagnetic radiation
  3. 3. a liquid that dissolves other substances
  4. 5. containing a stable ring with delocalized electrons
  5. 8. a large molecule made of repeating units