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Chemical Reactions

Chemical Reactions. Notes. Yields or Produces. Products. Reactants. Substances that undergo a change. New substances formed. Chemical Equations. A representation of a chemical reaction Tells you the substances present before a change and after a change. Law of Conservation of Mass.

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Chemical Reactions

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  1. Chemical Reactions Notes

  2. Yields or Produces Products Reactants Substances that undergo a change New substances formed

  3. Chemical Equations • A representation of a chemical reaction • Tells you the substances present before a change and after a change

  4. Law of Conservation of Mass • Mass is neither created nor destroyed in a chemical reaction

  5. Balancing Equations • In order to show that mass is conserved during a chemical reaction, a chemical equation must be balanced

  6. Coefficients • The numbers that appear before a chemical formula • Can be changed in order to balance an equation

  7. H2 3O2 4NH3 2H2PO4

  8. C + O2 CO2

  9. Cu + O2 CuO

  10. H2 + O2 H2O

  11. N2H4 + O2 N2 + H2O

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