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    PracticeAQA GCSEAQA GCSE Chemistry Foundation Tier Paper 2Question 06.4
    Medium4 marksExtended Response
    Using resourcesFoundationLCAsustainabilitycomparison

    AQA GCSE · Question 06.4 · Using resources

    Table 4
    Coated paper cups Poly(styrene) cups
    Source of raw materials Wood Crude oil
    Energy to make 1 cup in arbitrary units 550 200
    Biodegradable Yes No
    Recyclable No Yes

    Table 4 gives some information about disposable cups. Compare the advantages and disadvantages of using coated paper and poly(styrene) to make disposable cups. Use Table 4 and your knowledge and understanding of life cycle assessments (LCAs).

    How to approach this question

    1. Structure your answer by discussing both types of cups. 2. For each cup, identify at least one advantage and one disadvantage using the data in the table. 3. Use your own knowledge to expand on the points. For example, wood is a renewable resource, while crude oil is non-renewable. Biodegradable means it will rot away, while non-biodegradable means it will persist in landfill. 4. Make sure to make clear comparisons. For example, "Paper cups use more energy than polystyrene cups (550 vs 200 units)."

    Full Answer

    **Advantages of Paper Cups:** - They are made from a renewable resource (wood). - They are biodegradable. **Disadvantages of Paper Cups:** - They require more energy to make (550 units vs 200). - They are not recyclable. **Advantages of Poly(styrene) Cups:** - They require less energy to make (200 units vs 550). - They are recyclable. **Disadvantages of Poly(styrene) Cups:** - They are made from a non-renewable resource (crude oil). - They are not biodegradable, so they persist in landfill.
    This question requires a balanced comparison of the two types of cups based on the provided data and knowledge of Life Cycle Assessments (LCAs). **Coated Paper Cups:** - **Advantages:** The raw material, wood, is a **renewable resource**. The table also shows they are **biodegradable**, meaning they will break down naturally over time and not persist in the environment. - **Disadvantages:** They require significantly **more energy** to manufacture (550 units) compared to polystyrene cups. They are also **not recyclable**, meaning they will end up in landfill or be incinerated. **Poly(styrene) Cups:** - **Advantages:** They require much **less energy** to manufacture (200 units). They are also **recyclable**, which allows the material to be reused, conserving resources and reducing waste. - **Disadvantages:** The raw material, crude oil, is a **non-renewable resource**, which will eventually run out. They are **not biodegradable**, so if they are sent to landfill, they will persist for hundreds of years, contributing to plastic pollution.

    Common mistakes

    ✗ Only listing points for one type of cup. ✗ Not making comparisons (e.g., just saying "paper cups use 550 units of energy" instead of "paper cups use more energy than polystyrene cups"). ✗ Not using own knowledge to explain terms like renewable or biodegradable.
    Question 06.3All questionsQuestion 07.1

    Practice the full AQA GCSE Chemistry Foundation Tier Paper 2

    60 questions · hints · full answers · grading

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