Chemistry: Organic Chemistry

• Alkenes have general formula CnH2n, where n = number of carbons.
• Define Isomers


  A version of a molecule with the same molecular formula but a different molecular formula.
• What are the three main properties of hydrocarbon molecules?


  Viscosity, Flammability, boiling point
• what does viscosity tell us?

  the thickness of the fluid
• What happens if there is high viscosity?

  the fluids will flow slowly
• What happens to the viscous if the size of the hydrocarbon molecules increases?

  Increase
• what is the viscosity if the hydrocarbon molecules are long

  extremely viscous
• What is flammability


  how easily a hydrocarbon combusts (burns)
• what is the flammability for a short chain hydrocarbon

  extremely flammable
• when hydrocarbon molecules increase, the molecules will become less flammable
• long chain hydrocarbons are very difficult to burn
• What is the boiling point

  the temperature which a liquid turns into a gas
• short chain hydrocarbons have low boiling points
• all hydrocarbons are gases at room temperature because they all have boiling points which are lower than room temperature
• Increase of hydrocarbon molecules, will increase the boiling poiny