(Original post by Sambm96)
Firstly on the matter of coursework, I know that you will be needing a raw mark of 38 for an a*, definitely not 34. That will be a high b/a. This is due to the high amount of students achieving.
Here are some questions one of my teachers made:
What are plasticisers?
What other additives can be added to plastics?
Explain how plasticisers work in reducing a plastics density.
Why are countries reducing the amount of phthalates in children's toys?
What are polymers?
What are polymers made from and are they sustainable?
The study into the dangers of Phthalates is inconclusive. How would you improve a study to give a more conclusive result?
Banning phthalates from children's toys is an example of the ALARA principle. Explain what this means?
Plastics cause a lot of waste. Name 3 ways it can be dealt with.
Phthalates are a form of esters. Give an example of how esters are made.
Here are questions from another teacher:
What is a polymer?
Draw a diagram to illustrate the process of polymerisation.
Why are substances called plasticisers added to polymers?
How do plasticisers work? Draw a diagram to illustrate your answer.
Which type of plasticisers have research studies investigated?
What has been the outcome of these studies?
Why do you think the use of this group of plasticisers has been banned in production of some items but not others?
Explain the meaning of the term 'diffuse'?
How do the phthalates in the plastics get to contaminate food, soil and air?
What tests have been used to detect phthalates in the human body.
Why would some people argue that phthalates do not present a risk to human health?
Summarise the results obtained in the survey of pregnant women.
Why might some scientists say that more evidence is needed to support the conclusion that there is a link between phthalates and the type of play exhibited by young children?
What other factors might affect the type of play preferred or chosen by children and families?
'The evidence against them would be conflicting and inconclusive'. What does this statement mean?
Describe the different viewpoints of the scientist.
What does toxicity mean?
Why did the second scientist think that the risk of toxicity was low?
Suggest why the first scientist believes the plasticisers do present a possible risk to health.
What is another disadvantage of using plasticisers in plastics?
What have scientists discovered that could allow plastics to be safer and last longer?
How does this discovery stop the plasticisers diffusing into the environment?
What is your view? Should plasticisers be banned completely?
Hope that helps.