Fechar
What is cracking and what does it do?
Describe the process of cracking crude oil.
What is produced when kerosene is produced?
What is another way of cracking long-chain hydrocarbons?
What are alkenes?
What are the first two alkenes?
What is the general formula for alkenes?
Draw Ethene and Propene.
How can you test for alkenes?
How can ethene be reacted to produce ethanol?
How can ethanol also be produced from renewable resources?
What are the advantages and disadvantages of making ethanol from renewable resources?
How can alkenes be used to make polymers?
Explain how you make the polymer polythene.
Why do different polymers have different physical properties?
How can the different properties of polymers make them suitable for various different uses?
Why are the price of polymers changing and why don't they rot?
How can we extract oils from plants?
How are vegetable oils used?
What are the benefits of using vegetable oils for cooking?
How can vegetable oils be used to produce fuels?
How does the amount of bonds change in different oils and fats?
How can unsaturated oils be hydrogenated?
What happens to the oil when it is hydrogenated?
How is hydrogenating vegetable oil helpful to margarine?
How can vegetable oils in food affect health?
How can emulsions be made from oil and water?
How do the properties of emulsions change and how are the properties good for different uses?
Why do some foods contain emulsifiers?
What are the pros and cons of using emulsifiers?
What was the first part of Wegener's theory of continental drift?
What was the second part of Wegener's theory?
Why wasn't Wegener's theory accepted?
What was the outcome of Wegener's theory?
What is the Earth made up of?
What is the Earth's surface made up of?
Why can't scientists predict earthquakes and volcanic eruption? What are they doing to help predict them?
What is phase 1 of the evolution of the atmosphere?
What is phase 2 of the evolution of the atmosphere?
What is phase 3 of the evolution of the atmosphere?
What is the theory of primordial soup?
How does the earth have all resources humans need?
How does increasing carbon dioxide levels affect the climate and the oceans?
