plumiCrude oil and hydrocarbons: Edexcel GCSE Combined Science questions
Every Edexcel GCSE Combined Science exam question on Crude oil and hydrocarbons (specification points 8.1–8.6), 2018–2025, with its mark scheme and examiner’s report.
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Calculations
Q2(a)(i)
The whole paper ↗Q2(a)(ii)
The whole paper ↗Q5(b)
The whole paper ↗Q6(a)(i)
The whole paper ↗Q6(a)(ii)
The whole paper ↗Q6(d)
The whole paper ↗Q3(a)(i)
The whole paper ↗Q3(a)(ii)
The whole paper ↗Q3(a)(i)
The whole paper ↗Q3(a)(ii)
The whole paper ↗Q3(a)(iii)
The whole paper ↗Q3(a)(iv)
The whole paper ↗Q3(b)
The whole paper ↗Q6(a)(i)
The whole paper ↗Q6(a)(ii)
The whole paper ↗Q3(b)(i)
The whole paper ↗Q3(b)(ii)
The whole paper ↗Q3(a)(i)
The whole paper ↗Q3(a)(ii)
The whole paper ↗Q3(b)
The whole paper ↗
All 43 questions on Crude oil and hydrocarbons, as a list
- June 2025, Chemistry Paper 2 Higher, Q2(a)(i) (1 mark): The majority of hydrocarbons in crude oil belong to one homologous series. Give the name of this series. (1)
- June 2025, Chemistry Paper 2 Higher, Q2(a)(ii) (1 mark): Which structure represents a molecule of a hydrocarbon? (1) H A H C Cl H H H B C C H H H H H C H C C C O H H H H H H H H D H C C C C Br H H H H
- June 2025, Chemistry Paper 2 Higher, Q5(b) (1 mark): A molecule in an homologous series has the formula C9H21N. What is the formula of the next molecule in this homologous series? (1) A C10H21N B C10H23N C C10H21N
- June 2025, Chemistry Paper 2 Foundation, Q6(a)(i) (1 mark): The majority of hydrocarbons in crude oil belong to one homologous series. Give the name of this series. (1)
- June 2025, Chemistry Paper 2 Foundation, Q6(a)(ii) (1 mark): Which structure represents a molecule of a hydrocarbon? (1) H A H C Cl H H H B C C H H H H H C H C C C O H H H H H H H H D H C C C C Br H H H H
- June 2025, Chemistry Paper 2 Foundation, Q6(d) (6 marks): Crude oil is separated into useful products called fractions using fractional distillation. Figure 9 shows a fractional distillation column and the fractions ke
- June 2024, Chemistry Paper 2 Higher, Q3(a)(i) (2 marks): Most hydrocarbons found in fossil fuels are members of the alkane homologous series. State two features of an homologous series. (2) 1 2
- June 2024, Chemistry Paper 2 Higher, Q3(a)(ii) (1 mark): Which molecule is in the same homologous series as CH4? (1) A C5H20 B C6H12 C C8H18 D C9H16
- June 2024, Chemistry Paper 2 Foundation, Q3(a)(i) (1 mark): Give the number of carbon atoms in a molecule of compound X. (1)
- June 2024, Chemistry Paper 2 Foundation, Q3(a)(ii) (1 mark): Compound X contains carbon and one other element. Give the name of the other element in compound X. (1)
- June 2024, Chemistry Paper 2 Foundation, Q3(a)(iii) (1 mark): Which of the compounds in Figure 5 is a hydrocarbon? (1) A X only B Y only C X and Y only D X, Y and Z
- June 2024, Chemistry Paper 2 Foundation, Q3(a)(iv) (1 mark): Which of the compounds in Figure 5 have the same molecular formula? (1) A none of them B X and Y only C X and Z only D X, Y and Z
- June 2024, Chemistry Paper 2 Foundation, Q3(b) (3 marks): Figure 6 shows where fractions are produced in the fractional distillation of crude oil. fractions gases petrol kerosene diesel oil fuel oil crude oil bitumen F
- June 2023, Chemistry Paper 2 Higher, Q6(a)(i) (1 mark): Which row shows the correct uses for bitumen, diesel oil and fuel oil? (1) bitumen diesel oil fuel oil A fuel for large ships surfacing roads fuel for trains B
- June 2023, Chemistry Paper 2 Higher, Q6(a)(ii) (2 marks): Explain the trend in the viscosity of the fractions. (2)
- June 2022, Chemistry Paper 2 Higher, Q3(b)(i) (1 mark): Which statement about the members of the alkane homologous series is correct? (1) A they show a trend in chemical properties B their boiling point decreases as
- June 2022, Chemistry Paper 2 Higher, Q3(b)(ii) (1 mark): Which one of the following hydrocarbons belongs to the same homologous series as octane, C8H18? (1) A C4H6 B C4H8 C C4H10 D C4H12
- June 2022, Chemistry Paper 2 Foundation, Q3(a)(i) (2 marks): Give the names of the two elements in this molecule. (2)
- June 2022, Chemistry Paper 2 Foundation, Q3(a)(ii) (1 mark): What is the molecule in Figure 5? (1) A an oxide B a chain molecule C a fullerene D a ring molecule
- June 2022, Chemistry Paper 2 Foundation, Q3(b) (3 marks): Crude oil can be separated into different fractions. Draw one straight line from each fraction to a use of that fraction. (3) fraction use fuel for aircraft fue
- November 2021, Chemistry Paper 2 Higher, Q2(a) (1 mark): State the name of the process used to separate diesel oil from crude oil. (1)
- November 2021, Chemistry Paper 2 Higher, Q2(b) (1 mark): Diesel oil contains alkanes. These alkanes are part of an homologous series. Which statement about compounds in this homologous series is true? (1) A they have
- November 2021, Chemistry Paper 2 Foundation, Q6(a) (1 mark): State the name of the process used to separate diesel oil from crude oil. (1)
- November 2021, Chemistry Paper 2 Foundation, Q6(b) (1 mark): Diesel oil contains alkanes. These alkanes are part of an homologous series. Which statement about compounds in this homologous series is true? (1) A they have
- November 2020, Chemistry Paper 2 Foundation, Q4(b)(i) (1 mark): Name the fraction in Figure 7 that is used to surface roads. (1)
- November 2020, Chemistry Paper 2 Foundation, Q4(b)(ii) (1 mark): Name the fraction in Figure 7 that contains hydrocarbons with the lowest boiling point. (1)
- June 2019, Chemistry Paper 2 Higher, Q1(a) (1 mark): Which statement about crude oil is correct? (1) A crude oil is a compound of different hydrocarbons B crude oil is a mixture of hydrocarbons C crude oil contain
- June 2019, Chemistry Paper 2 Higher, Q1(b)(i) (2 marks): State a use for each of these fractions. (2) kerosene. diesel oil
- June 2019, Chemistry Paper 2 Higher, Q1(b)(ii) (1 mark): Figure 1 shows where the fractions kerosene and diesel oil are produced in the fractionating column. fractions kerosene diesel oil crude oil Figure 1 Kerosene i
- June 2019, Chemistry Paper 2 Higher, Q1(c)(i) (2 marks): Explain, using these formulae, why butane and pentane are neighbouring members of the same homologous series. (2)
- June 2019, Chemistry Paper 2 Foundation, Q5(a) (1 mark): Which statement about crude oil is correct? (1) A crude oil is a compound of different hydrocarbons B crude oil is a mixture of hydrocarbons C crude oil contain
- June 2019, Chemistry Paper 2 Foundation, Q5(b)(i) (2 marks): State a use for each of these fractions. (2) kerosene. diesel oil
- June 2019, Chemistry Paper 2 Foundation, Q5(b)(ii) (1 mark): Figure 8 shows where the fractions kerosene and diesel oil are produced in the fractionating column. fractions kerosene diesel oil crude oil Figure 8 Kerosene i
- June 2019, Chemistry Paper 2 Foundation, Q5(c)(i) (2 marks): Explain, using these formulae, why butane and pentane are neighbouring members of the same homologous series. (2)
- June 2018, Chemistry Paper 2 Higher, Q4(a) (1 mark): Crude oil can be separated into useful fractions by fractional distillation. Figure 3 shows a fractional distillation column and the fractions produced when a s
- June 2018, Chemistry Paper 2 Higher, Q4(b)(i) (1 mark): Which of the following is the general formula of an alkane? (1) A CnH2n B CnH2n +1 C CnH2n −1 D CnH2n +2
- June 2018, Chemistry Paper 2 Higher, Q4(b)(ii) (2 marks): Explain why alkanes are described as hydrocarbons. (2)
- June 2018, Chemistry Paper 2 Higher, Q4(c) (2 marks): Figure 4 shows a graph of the boiling points of some alkanes against the number of carbon atoms in one molecule of each alkane. 180 – boiling point 160 – in °C
- June 2018, Chemistry Paper 2 Foundation, Q3(a) (1 mark): Which of the statements about crude oil is correct? (1) A crude oil is a finite resource B crude oil is a mixture of the elements hydrogen and carbon C all of t
- June 2018, Chemistry Paper 2 Foundation, Q3(b) (1 mark): The substances ethane, C2H6, octane, C8H18, and pentadecane, C15H32, are all found in crude oil. These substances (1) A have the same formula B have the same bo
- June 2018, Chemistry Paper 2 Foundation, Q3(c)(i) (2 marks): Use a word from the box to complete each of the sentences about the fractional distillation of crude oil. condensed heated melted solidified stirred Each word m
- June 2018, Chemistry Paper 2 Foundation, Q3(c)(ii) (1 mark): Complete this sentence by underlining the correct answer in the box. (1) Compared with the fraction from the top of the column, has more carbon atoms per molecu
- June 2018, Chemistry Paper 2 Foundation, Q3(e) (3 marks): In January 2015 the United Kingdom produced 850 000 barrels of crude oil per day. 45% of this crude oil was fuel oil. Calculate the number of barrels of fuel oi
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