Chemistry 1

• Organic substances


  Substances that consist of carbon atoms, molecules that comprise all living organisms
• Organic substances


  • Plants
  • Proteins
  • Fats
  • DNA
• Inorganic substances


  Substances that do not consist of carbon atoms, make up non-living organisms
• Inorganic substances


  • Salts
  • Metals
• Chemical formulas


  Symbols made from elements in a pattern that show the atoms present in the compound
• Types of chemical formulas

  • Empirical formula
  • Molecular formula
  • Structural formula
  • Lewis electron dot formula
• Empirical formula


  Simplest formula, simplest ratio of atoms in the compound
• Molecular formula


  Actual number of atoms that comprise a molecule of that compound
• Molecular formula


  • Glucose, C6H12O6
• Structural formula


  Symbols to represent atoms, lines or bonds to represent valence
• Structural formula


  • Carbon tetrafluoride, Cl-C-Cl
• Lewis electron dot formula

  Representation of atoms and their valence electrons