5.13 - I can describe catalytic cracking of long-chain hydrocarbons.

a. What is cracking?


b. Why does it need to be carried out?


c. What is a catalyst?


d. What catalyst is used in this experiment?


e. What allows the liquid paraffin to break down into short-chain hydrocarbons?


d. Which important safety aspects should be carried out?


e. Why are the first bubbles not collected?


f. Why is the gas collected under water?