Chemical Reactions

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Across
  1. 1. method used for balancing equation
  2. 4. number that represents the number of units of each substance taking part in a reaction
  3. 5. reaction that releases energy from the reactants to its surroundings
  4. 9. substance used to slow down a chemical reaction
  5. 10. insoluble compound that comes out of solution during a double-displacement reaction
  6. 11. first step in MINOH method
  7. 12. a reaction in which energy is absorbed by reactants from the surroundings is called an _______
  8. 15. in a _________, the positive ion of one compoundreplaces the positive ion of the other to form two new compounds
  9. 17. a change in the chemical composition of a substance
  10. 18. matter is neither created nor destroyed, but conserved during chemical changes
  11. 19. gain of electrons
Down
  1. 2. used to describe the loss of electrons
  2. 3. when one element replaces another element in a compound, it is called a ________
  3. 6. substance that speeds up a chemical reactions without being permanently changed itself
  4. 7. an atom that loses or gains one or more electron
  5. 8. chemical equations need to be__________
  6. 13. (s)
  7. 14. (g)
  8. 16. the new substance that is formed in a chemical reaction
  9. 18. (l)
  10. 19. the substance that reacts in a chemical reaction