Chemistry- 1b

Question 0

Give a typical example of a substance that is cracked and the products that you get from cracking it.

Answer 0

Diesel

Products from cracking it: - petrol

                                       - paraffin 
                                       - ethane for plastics

Question 1

What is cracking? Why is it done?

Answer 1

Splitting up long chain hydrocarbons. Long chain hydrocarbons form thick gloopy liquids like tar which aren’t useful so they are turned into smaller ones by a process called cracking.

Question 2

What kind of carbon - carbon bond do Allkenes have?

Answer 2

Double bond carbon=carbon ( c=c )

Question 3

What is the general formula for Alkenes?

Answer 3

C2⃣H4⃣ (carbon (3) Hydrogen (4) )

Question 4

Draw the chemical structure of ethene.

Answer 4

H              H 
    \        / 
      C=C 
     /       \ 
H              H