- PRODUCTS FROM OILS.
- we can split large hydrocarbon molecules up into smaller molecules by heating them and passing the gas over a catalyst.
- cracking produces unsaturated hydrocarbons, which we can alkenes.
- alkenes burn, and also react with bromine water, producing colourless products.
Making polymers from alkenes.
- plastics are made of polymers.
- polymers are large molecules (small molecules) join together.
The properties of plastics.
- monomers affect the properties of the polymers that they produce.
- changing reaction conditions can also change the type of polymers that is produced.
New and useful polymers.
- new polymers are being developed all the time. they are designed to have properties that make them specially suited for certain uses.
- smart polymers may have their properties changed by other changes in their surroundings.
Extracting vegetable oils.
- vegetable oils can be extracted from plants by pressing or by important foods.
- vegetable oils are important foods.
- unsaturated oils contain carbon-carbon double bonds. we can detect them using bromine or iodine solutions.
Cooking with vegetable oils.
- vegetable oils are useful in cooking because…