Search for notes by fellow students, in your own course and all over the country.
Browse our notes for titles which look like what you need, you can preview any of the notes via a sample of the contents. After you're happy these are the notes you're after simply pop them into your shopping cart.
Title: GCSE Chemistry 2.5 - Organic Chemistry
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.
Document Preview
Extracts from the notes are below, to see the PDF you'll receive please use the links above
2
...
The hydrocarbons present condense at different heights in the column; the lower
the boiling point, the higher in the column a compound is collected
...
The effect of chain length on fractions’ colour (colourless – yellow – brown)
•
The longer the chain lengths, the darker the colour
...
The effect of chain length on fractions’ ease of ignition
•
The longer the chain lengths, the more difficult the ignition
The effect of chain length on fractions’ cleanliness of burn
•
The longer the chain lengths, the less clean the burn
...
Rapidly growing economies in China and India will consume greater amounts of
energy year on year and supplying that energy using crude oil is not sustainable in
the long term
...
Many important products (such as plastics and medicines) are made using
components of crude oil and that people will eventually have to decide between
burning the remaining reserves of oil and using it for other purposes
...
2
mass of alcohol
The combustion of hydrogen
•
forms water only
Hydrogen as an energy source
•
•
•
•
•
•
•
used in rocket fuel
used in hydrogen fuel cells to power cars
renewable, as it is produced from water
does not contribute towards global warming or acid rain, as water is the only
product
requires large amounts of electricity to produce hydrogen from electrolysis
storage requires bulky and heavy pressurised containers
potentially hazardous, as it forms an explosive mixture with air
18
Cracking
•
•
involves heating fractions obtained from crude oil to a high temperature in the
presence of a catalyst, causing the hydrocarbon molecules present to decompose to
form smaller molecules, including a monomer (
Title: GCSE Chemistry 2.5 - Organic Chemistry
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.