AQA GCSE Chemistry - C7 - Organic Chemistry
1. What is a hydrocarbon?
Answer: A hydrocarbon is a compound that contains only hydrogen and carbon atoms.
2. What is the simplest type of hydrocarbon?
Answer: Alkanes are the simplest type of hydrocarbon, characterized by having single bonds bet...
5. What is the complete combustion equation for hydrocarbons?
Answer: The complete combustion equation for hydrocarbons is Hydrocarbon + Oxygen → Carbon
dioxide + Water.
6. What are some common properties of hydrocarbons?
Answer: Shorter-length hydrocarbons are more runny, more volatile, and more flammable, with lower
boiling points.
7. How are different-sized hydrocarbons separated from crude oil?
, Answer: Fractional distillation is the process of separating different-sized hydrocarbons from crude oil.
8. What is crude oil?
Answer: Crude oil is a fossil fuel formed from the remains of plants and animals, mainly plankton, that
died millions of years ago and were buried in the mud at the bottom of the ocean.
9. How does fractional distillation work?
Answer: Fractional distillation involves heating oil until it turns to gas, then passing it through a column
where longer hydrocarbons liquidize early and drain out near the bottom, while shorter hydrocarbons
liquidize later and drain out near the top.
10. What are some common uses of crude oil?
Answer: Crude oil is used as fuel for most modes of transport and in the petrochemical industry.
11. What is cracking?
Answer: Cracking is the process of splitting up long-chain hydrocarbons into shorter chains.
12. How does cracking work?
Answer: Cracking involves heating long-chained hydrocarbons to vaporize them, then passing them over
a hot aluminum oxide catalyst to split the molecules apart, followed by mixing with steam and heating
to a high temperature.
13. What are alkenes?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller bestscores1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.46. You're not tied to anything after your purchase.