Chemical Reactions and Equations

12345678910
Across
  1. 4. Process in which one or more substances are changed into new substances
  2. 5. Chemical reaction in which two or more substances combine
  3. 6. Reaction in which heat is evolved
  4. 7. Substance that speeds up a chemical reaction without being consumed
  5. 9. Substance that undergoes a chemical change
Down
  1. 1. Reaction in which heat is absorbed
  2. 2. Chemical equation in which the number of atoms of each element is equal on both sides
  3. 3. Type of chemical reaction in which a single compound breaks down
  4. 8. Representation of a chemical reaction using symbols and formulas
  5. 10. Number that represents the number of atoms of an element in a molecule