cracking

    Cards (15)

    • 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?
      CnH2n+2C_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
    • How do you balance a chemical equation for cracking?
      Ensure carbon and hydrogen atoms are equal
    • In a cracking equation, if the left side has 25 carbon and 52 hydrogen atoms, what must the right side total?
      Must also total 25 carbon and 52 hydrogen
    • If a cracking reaction has 40 carbon and 82 hydrogen atoms on the left, how many are in the first product?
      33 carbon and 68 hydrogen atoms
    • What are the two types of cracking methods?
      • Catalytic cracking
      • Uses high temperature and a catalyst
      • Steam cracking
      • Uses high temperature and steam
    • What are the uses of alkenes?
      • Used to make polymers
      • Starting material for other chemicals
    • What is the significance of the double bond in alkenes?
      • Makes alkenes more reactive than alkanes
      • Allows for addition reactions
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