cracking and alkenes

Question 1

describe cracking in general terms as an example of thermal decomposition

Answer 1

During cracking, the hydrocarbons are heated up in order for them to break down

Question 2

describe in general terms the conditions for catalytic cracking

Answer 2

Catalytic cracking uses a temperature of approximately 550°C and a catalyst. known as a zeolite which contains aluminium oxide and silicon oxide.

Question 3

describe in general terms the conditions for steam cracking

Answer 3

. Steam cracking uses a higher temperature of over 800°C and no catalyst.

Question 4

identify the products of cracking

Answer 4

smaller chains of alkanes and alkenes

Question 5

explain how to test for an alkene

Answer 5

pour bromine and if it turns colourless its positive

Question 6

explain why cracking is used and give examples to illustrate its usefulness

Answer 6

racking is important in chemistry because it allows for the production of smaller, more useful products from larger, less valuable ones