Cracking (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is cracking?
What is cracking?
Breaking large hydrocarbons into smaller
What type of reaction is cracking?
What type of reaction is cracking?
Thermal decomposition
Why is cracking needed?
Why is cracking needed?
Shortage of small molecules from oil
In Method 1 of cracking, what do the vapours pass over?
In Method 1 of cracking, what do the vapours pass over?
A hot catalyst
What is mixed with vapours in Method 2 of cracking?
What is mixed with vapours in Method 2 of cracking?
Steam
What products does cracking always produce?
What products does cracking always produce?
A shorter alkane and an alkene
How can you identify the alkene in a cracking equation?
How can you identify the alkene in a cracking equation?
It has fewer hydrogen atoms
What are alkanes from cracking used for?
What are alkanes from cracking used for?
Fuels and feedstock for chemicals
What are alkenes from cracking used to make?
What are alkenes from cracking used to make?
Polymers (plastics)
Why do smaller hydrocarbons make better fuels?
Why do smaller hydrocarbons make better fuels?
Less viscous, more flammable, lower boiling points
In lab cracking, what does the vapour pass over?
In lab cracking, what does the vapour pass over?
A hot catalyst