Chemistry Paper 1 Higher
June 2024 · AQA GCSE
Report readyYour score
62 / 100 marks
KayScience – marked paper
AQA 8462/C/1H June 2024 – Chemistry Paper 1 Higher (June 2024)
Score: 62 / 100
Marked Tue 13 Oct
A solid paper, Amir. You know your atomic structure and bonding well, and your calculations are set out clearly. Most of the marks you lost were on the six-mark electrolysis question and on missing units – both quick to fix.
Your next steps
- 1
Electrolysis: Learn which product forms at each electrode and why – then practise writing the half equations for molten and aqueous compounds.
- 2
Units: Finish every calculation with its unit. Four marks went on units alone.
- 3
Six-mark questions: Plan three linked points before you write, and answer the command word ("explain" needs a reason).
What you did well
- Clear, step-by-step working in the moles calculations.
- Accurate dot-and-cross diagrams for ionic bonding.
- Good use of key words such as "delocalised electrons" and "giant lattice".
Marks by topic
Exam tip
Underline the command word in each question before you start. "Describe" means say what happens; "explain" means say why.
Practise these next
- AQA 8462/C/1H June 2023, question 04.2 · Electrolysis
- AQA 8462/C/1H June 2022, question 03.4 · Quantitative chemistry
Where marks were lost (6)
Question 02.2 · Bonding and structure
1/3We read your answer as: “Diamond is giant covalent so it has a high melting point”
You named the structure correctly.
To get the marks: Say that there are many strong covalent bonds, and that a lot of energy is needed to break them.
Question 03.2 · Quantitative chemistry
2/4We read your answer as: “moles = 4.8 ÷ 24 = 0.2 mass = 0.2 × 44 = 8.8”
Correct number of moles of gas.
To get the marks: Use the 1 : 2 ratio from the equation before working out the mass, and give the unit (g).
Question 04.1 · Electrolysis
3/6We read your answer as: “Hydrogen is made at the negative electrode. Chlorine is made at the positive electrode because chloride ions are negative.”
You gave the right product at each electrode.
To get the marks: Explain why hydrogen forms rather than sodium (sodium is more reactive than hydrogen), and say that the ions gain or lose electrons at each electrode.
Question 05.2 · Energy changes
0/2Left blank
To get the marks: An exothermic reaction gives out energy to the surroundings, so the temperature goes up.
Question 06.1 · Chemical changes
1/3We couldn’t read all of this answer. If you think it was right, ask for it to be checked again.
To get the marks: Name the salt (zinc sulfate) and the gas (hydrogen), and describe the test for hydrogen (a squeaky pop with a lit splint).
Question 08.3 · Quantitative chemistry
1/2We read your answer as: “0.25 mol/dm”
Right number.
To get the marks: The unit is mol/dm³ – the "cubed" is part of the unit.
Marked against the official mark scheme. Each answer was read and marked by AI, with a second independent marking for the trickiest questions.