Organic Chemistry Flashcards
List the prefixes for 1, 2, 3, 4 and 5 carbons.
- Meth
- Eth
- Prop
- But
- Pent
What is cracking?
Breaking down large molecules into smaller, less viscous, more flammable molecules.
Hw do you make ethanoic acid?
Oxidising ethanol
Which oxidising agent speeds up the oxidation of ethanol?
Acidified potassium manganate VII.
Hw do you identify carboxylic acids?
Functional group COOH
state the chemical formula for ethanoic acid
CH3COOH
State the molecular formula for ethanoic acid
C2H4O2
State the empirical formula for ethanoic acid.
CH2O
Ethanol + ethanoic acid –> ?
Ethylethanoate + water
How are the properties of hydrocarbons affected with the length of chain? (3)
The longer the chain..
- Higher mpt
- More viscous
- Less flammable
What is a macromolecule?
A large molecule made up from small units.
What is a homologous series?
A ‘family’ of similar compounds with similar properties due to e presence of the same functional group.
How do we identify alcohols?
Functional group OH
How does ethanol burn?
With a clean flame
Why is ethanol useful as a solvent?
It dissolves polar and no polar chemicals
Wy is ethanol useful as a fuel? (2)
- It is highly exothermic
2. It burns with a clean flame.
Ethene + steam –> ?
Ethanol
How can we make ethanol? (2 methods)
- Fermentation
2. Catalytic addition of steam to ethene
State the general formula for alcohols.
CnH2n+1OH
State the 2 main uses of ethanol.
- As a fuel
2. As a solvent
If a molecule contains a C=C is it saturates or unsaturated?
Usaturated
Ethene + hydrogen –> ?
Ethane
What is the general formula of alkanes?
CnH2n+2
What happens when alkanes come into contact with chlorine (in sunlight)?
A substitution reaction takes place where chlorine atoms take the place of hydrogen atoms.
Are alkanes saturated or unsaturated?
Saturated
What is the general formula of alkenes?
CnH2n
Hw do you identify alkanes?
Hydrocarbons with single bonds
State a property of alkanes.
Generally unreactive except when burning.
If a molecule contains all single bonds, is it saturated or unsaturated?
Saturated
Are alkenes saturated or unsaturated?
Unsaturated
What is a structural isomerism?
When 2 molecules have the same molecular formula but a different structural formula (ie the bonds are arranged differently).
What is a weak acid?
An acid that only partially ionises in solution.
What type of polymer is starch?
A polysaccharide
What is a complex carbohydrate?
A polysaccharide with simple sugar monomers.
What type of polymerisation makes nylon/terylene/starch?
Condensation polymerisation
List 2 uses of Teflon.
- Non-stick coating on frying pans
2. Windscreen wipers
List 2 uses of terylene.
- Clothing
2. Thread
List 2 uses of polystyrene.
- Packaging
2. Insulation for roofs and walls
What type of polymer is nylon?
A polyamide.
List 2 uses of polychloroethene (PVC).
- Water pipes
2. Wellingtons
List 2 uses of nylon.
- Fishing nets
2. Ropes
What type of polymerisation makes polyethene?
Addition polymerisation.
What is an amide link?
-C-N-
|| |
O H
What are the monomers of polyethene?
Ethene
How are complex carbohydrates converted to small sugar units?
Acid hydrolysis
How is soap made?
The alkaline hydrolysis of fats.
What is the structure of starch?
-O-[#%%%#%#]-O-[#%#%##%]-
What is the structure of protein?
- N - C - C - N - C - C - N - C - C -
| | || | | || | | ||
H R1 O H R2 O H R3 O
List 4 problems with non biodegradable plastics.
- Do not decompose so fill up landfill sights
- Choke animals
- Cog drains
- Collect in rivers
What type of polymer is terylene?
A polyester
List 2 uses of polythene.
- Plastic bag
2. Clingfilm
Compare nylon and protein.
The have the same amide link but have different units.
Compare fats and terylene.
They have the same ester link but different units.
What is the product of the hydrolysis of fats?
Soap
How are proteins converted into amino acid?
Acid hydrolysis