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AQA / AQA GCSE CHEMISTRY 2021 Higher Tier Paper 2 QUESTION PAPER

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AQA / AQA GCSE CHEMISTRY 2021 Higher Tier Paper 2 QUESTION PAPER . Oil contains carbon and some sulfur. When oil is burned, the products of combustion may be released into the atmosphere. Expla... in the environmental effects of releasing these products of combustion into the atmosphere. box [6 marks] . Suggest one reason why using solar energy is a more sustainable way of generating electricity than burning oil. box [1 mark] Turn over for the next question Table 1 shows information about some alkanes. Table 1 box Number of carbon atoms in alkane molecule Boiling point of alkane in °C 4 0 5 36 6 69 7 X 8 126 9 151 . Plot the data from Table 1 on Figure 2. Figure 2 [2 marks] . Predict the boiling point X of the alkane with seven carbon atoms in a molecule. box Use Table 1 and Figure 2. [1 mark] X = °C . Figure 2 is not suitable to show the boiling point of the alkane with three carbon atoms in a molecule. Suggest one reason why. [1 mark] . What is the state at 20 °C of the alkane with four carbon atoms in a molecule? Use Table 1. [1 mark] Question 2 continues on the next page *07* [Show More]

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