science

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Across
  1. 2. the combining of the constituent elements of separate material or abstract entities into a single or unified entity
  2. 6. a reaction in which one element is substituted for another element
  3. 9. a substance that speeds up a chemical reaction, or lowers the temperature or pressure needed
  4. 10. symbolic representations of chemical reactions in which the reactants and the products are expressed
  5. 12. substances initially present in a chemical reaction that are consumed during the reaction to make products
Down
  1. 1. results when water losses from the body exceed water replacement
  2. 3. a process in which one or more substances, the reactants, are converted to one or more different substances
  3. 4. noting or pertaining to a chemical change that is accompanied by a liberation of heat
  4. 5. a chemical reaction between substances
  5. 7. product is a substance that is formed as the result of a chemical reaction
  6. 8. a group of two or more atoms that form the smallest identifiable unit
  7. 11. noting or pertaining to a chemical change that is accompanied by an absorption of heat