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Discovering chemistry
Discovering chemistry

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Summary of session 5

  • In a chemical reaction, the total mass of the reactants equals the total mass of the products.
  • Balanced chemical equations are used to concisely represent chemical reactions.
  • The structural formulas of organic molecules can be divided into the carbon-hydrogen framework or skeleton, and the functional group(s). In the first approximation, the functional groups are the sites where reaction occurs, the framework remaining unreactive.
  • The above approximation works best when the framework consists of saturated carbon atoms.