Cracking (AQA GCSE Chemistry Combined Science): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
ShowHide
Practise the questions
11 questions from this quiz
What is the main purpose of cracking in the oil industry?
What is the main purpose of cracking in the oil industry?
Breaking down large hydrocarbons into smaller ones
What type of reaction is cracking?
What type of reaction is cracking?
Thermal decomposition
What are the two main methods used for cracking?
What are the two main methods used for cracking?
Hot catalyst or steam at high temps
Why are high temperatures essential for cracking?
Why are high temperatures essential for cracking?
To break strong covalent bonds
What products does cracking always produce?
What products does cracking always produce?
A shorter alkane and an alkene
How does the viscosity of smaller hydrocarbons compare to larger ones?
How does the viscosity of smaller hydrocarbons compare to larger ones?
Less viscous (less thick and sticky)
Which property makes smaller hydrocarbons better fuels?
Which property makes smaller hydrocarbons better fuels?
More flammable with lower boiling points
What are alkanes from cracking used for?
What are alkanes from cracking used for?
Fuels and feedstock for chemicals
What is a major use of alkenes produced from cracking?
What is a major use of alkenes produced from cracking?
Making polymers (plastics)
In laboratory cracking, what is used to heat the paraffin?
In laboratory cracking, what is used to heat the paraffin?
Bunsen burner and catalyst