cracking

• What is meant by cracking in chemistry?

  Breaking down long chain hydrocarbons
• What are the conditions for catalytic cracking?

  High temperature and a catalyst
• What is the general formula for alkanes?

  $C_nH_{2n+2}$
• Why are long chain hydrocarbons not good fuels?

  They are not very flammable
• What is produced when cracking a long chain alkane?

  Shorter chain hydrocarbons and alkenes
• What is an alkene?

  A hydrocarbon with a double bond
• How do alkenes differ from alkanes in terms of reactivity?

  Alkenes are more reactive than alkanes
• What test is used to identify alkenes?

  Using bromine water
• What happens to bromine water when it reacts with an alkene?

  It turns colorless
• Why is it important to say bromine water turns colorless?

  Because "clear" is not correct terminology
• How do you balance a chemical equation for cracking?

  Ensure carbon and hydrogen atoms are equal
• What are the uses of alkenes?

  • Used to make polymers
  • Serve as starting materials for chemicals
• What is the significance of balancing chemical equations in cracking?

  • Ensures conservation of mass
  • Confirms equal number of atoms on both sides