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AQA GCSE Separate Science Chemistry – Paper 2 Higher Tier Predicted Paper 2023 WITH marking scheme $24.29   Add to cart

Exam (elaborations)

AQA GCSE Separate Science Chemistry – Paper 2 Higher Tier Predicted Paper 2023 WITH marking scheme

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AQA GCSE Separate Science Chemistry – Paper 2 Higher Tier Predicted Paper 2023 WITH marking scheme Name …………………………………………………………………… Date ………………… 1 hour 45 minutes allowed. You may use a calculator and an AQA periodic ta...

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  • May 13, 2023
  • 27
  • 2022/2023
  • Exam (elaborations)
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GCSE CHEM PPR2 HIGHER PREDICTED 2023




AQA GCSE Separate
Science
Chemistry –
Paper 2 Higher
Tier
Predicted Paper 2023 WITH marking scheme


Name ……………………………………………………………………
Date …………………


1 hour 45 minutes allowed.
You may use a calculator and an AQA periodic table.




Grade boundaries Possible Marks
Question
marks gained
These are VERY rough guesses! Getting a 1 17
7 on this paper does not guarantee you 2 17
the same mark in the exam. 3 15
4 17
5 17
 9 70% 6 8
7 9
 8 60%
Total 100
 7 50%
 6 45%
 5 35%
 4 30%
 3 25%



1

,GCSE CHEM PPR2 HIGHER PREDICTED 2023



01
a) Alkanes are hydrocarbons.
Define the term hydrocarbon.
[2 marks]




b) The general formula for alkanes is CnH2n+2,

i. Give the formula for an alkane that has 3 carbons.
[1 mark]


C H




ii. Give the specific name for this alkane.
[1 mark]




iii. Draw this alkane.
[3 marks]




C C C




2

, GCSE CHEM PPR2 HIGHER PREDICTED 2023



c) Alkanes are often very long chains; these are found in the ground
as crude oil. Crude oil is a mixture of different length hydrocarbon
chains.

Explain why crude oil needs to be refined before it can be used.
[3 marks]




d) A student said that “fractional distillation can be used to separate all
types of mixtures”.

Discuss if this student is correct or not.
[3 marks]




3

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