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OCR GCSE Combined Science

Topic questions Using resources Life cycle assessment

Life cycle assessment

8 questions · 50 marks · about 1 hour

Life cycle assessment questions

TopicLife cycle assessment

OCR J250 Life cycle assessment 8 questions

Chemistry Paper 4 June 2025 Foundation tier, Question 14 6 marks

14* Containers for drinks are made from aluminium or glass.

Figure for question 14

Aluminium can Glass bottle

The table shows some information about the containers.

Aluminium canGlass bottle
Energy used in production from raw materials (kJ / kg)300 0002 500
Contribution of production to global warmingmediumhigh
Amount of energy saved during recycling (%)9525
Amount of containers collected for recycling (%)7575
Time to decompose when put in landfill (years)801 000 000

State which container you would choose to produce as a container for drinks.

Explain your choice using information from the table. Include an advantage and a disadvantage of your chosen container in your answer.

[6]
Reveal mark scheme Mark scheme for question 14

Chemistry Paper 4 June 2024 Foundation tier, Question 16, also on the Higher paper 12 marks

Aluminium is extracted from a rock called bauxite which contains aluminium oxide.

The diagram shows information from a life-cycle assessment for the manufacture and use of aluminium products.

Figure for question 16
(a)

Give one reason why a life-cycle assessment is carried out.

[1]
Reveal mark scheme Mark scheme for question 16(a)
(b)

Give two reasons why the products should be recycled at the end of their useful life.

[2]
Reveal mark scheme Mark scheme for question 16(b)
(c)

18% of the bauxite rock is turned into aluminium.

Calculate the mass of aluminium that is extracted from 7500 kg of bauxite.

Give your answer to 2 significant figures.

[3]
Reveal mark scheme Mark scheme for question 16(c)
(d)
Figure for question 16
[2]
Reveal mark scheme Mark scheme for question 16(d)
(e)

Aluminium is extracted from aluminium oxide, Al2O3, by electrolysis.

(e)(i)

This is the equation for the electrolysis of aluminium oxide.

Question 16, shown as an image

A student thinks that this reaction is an example of reduction.

Explain why the student is correct.

[1]
Reveal mark scheme Mark scheme for question 16(e)(i)
(e)(ii)

Extracting aluminium by electrolysis is expensive.

Which statements about why the electrolysis is expensive are true, and which are false ?

Tick one (✓) box in each row.

Figure for question 16
[2]
Reveal mark scheme Mark scheme for question 16(e)(ii)
(e)(iii)

It would be cheaper if aluminium could be extracted by heating the aluminium oxide with carbon.

Explain why aluminium oxide does not react with carbon.

[1]
Reveal mark scheme Mark scheme for question 16(e)(iii)

Chemistry Paper 10 June 2024 Higher tier, Question 11, also on the Foundation paper 12 marks

Aluminium is extracted from a rock called bauxite which contains aluminium oxide.

The diagram shows information from a life-cycle assessment for the manufacture and use of aluminium products.

Figure for question 11
(a)

Give one reason why a life-cycle assessment is carried out.

[1]
Reveal mark scheme Mark scheme for question 11(a)
(b)

Give two reasons why the products should be recycled at the end of their useful life.

[2]
Reveal mark scheme Mark scheme for question 11(b)
(c)

18% of the bauxite rock is turned into aluminium.

Calculate the mass of aluminium that is extracted from 7500 kg of bauxite.

Give your answer to 2 significant figures.

[3]
Reveal mark scheme Mark scheme for question 11(c)
(d)
Figure for question 11
[2]
Reveal mark scheme Mark scheme for question 11(d)
(e)

Aluminium is extracted from aluminium oxide, Al2O3, by electrolysis.

(e)(i)

This is the equation for the electrolysis of aluminium oxide.

Question 11, shown as an image

A student thinks that this reaction is an example of reduction.

Explain why the student is correct.

[1]
Reveal mark scheme Mark scheme for question 11(e)(i)
(e)(ii)

Extracting aluminium by electrolysis is expensive.

Which statements about why the electrolysis is expensive are true, and which are false ?

Tick one (✓) box in each row.

Figure for question 11
[2]
Reveal mark scheme Mark scheme for question 11(e)(ii)
(e)(iii)

It would be cheaper if aluminium could be extracted by heating the aluminium oxide with carbon.

Explain why aluminium oxide does not react with carbon.

[1]
Reveal mark scheme Mark scheme for question 11(e)(iii)

Chemistry Paper 4 June 2022 Foundation tier, Question 15 6 marks

15* Carrier bags can be made from either recycled paper or biodegradable plastic (which will decay and break down when in the ground).

Figs 15.1 to 15.4 show information about the production of carrier bags from recycled paper and from biodegradable plastic.

Fig. 15.1
Fig. 15.2

Figure for question 15

Fig. 15.3
Fig. 15.4

Figure for question 15

Suggest whether the carrier bags should be made from recycled paper or biodegradable plastic.

Explain your choice using the information from Figs 15.1 to 15.4 and your own scientific knowledge.

[6]
Reveal mark scheme Mark scheme for question 15

Chemistry Paper 4 November 2021 Foundation tier, Question 3 1 mark

The diagram shows the main stages in a life-cycle assessment of a product.

Figure for question 3

What is the name of Stage X ?

A Disposal

B Extraction

C Packaging

D Production

Question 3, shown as an image
[1]
Reveal mark scheme Mark scheme for question 3

Chemistry Paper 4 June 2018 Foundation tier, Question 17, also on the Higher paper 6 marks

Figure for question 17
(a)

Complete the table to show the totals for each column.

[2]
Reveal mark scheme Mark scheme for question 17(a)
(b)

Write down the name of process W.

[1]
Reveal mark scheme Mark scheme for question 17(b)
(c)

It costs more to transport glasses made from material B.

Suggest a reason why.

[1]
Reveal mark scheme Mark scheme for question 17(c)
(d)

Which material should the company choose?

Justify your answer.

[2]
Reveal mark scheme Mark scheme for question 17(d)

Chemistry Paper 10 June 2018 Higher tier, Question 11, also on the Foundation paper 6 marks

Figure for question 11
(a)

Complete the table to show the totals for each column.

[2]
Reveal mark scheme Mark scheme for question 11(a)
(b)

Write down the name of process W.

[1]
Reveal mark scheme Mark scheme for question 11(b)
(c)

It costs more to transport glasses made from material B.

Suggest a reason why.

[1]
Reveal mark scheme Mark scheme for question 11(c)
(d)

Which material should the company choose?

Justify your answer.

[2]
Reveal mark scheme Mark scheme for question 11(d)

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