Chemistry 6-marker trainer
The AQA GCSE Chemistry 6-markers students lose most marks on — rates, electrolysis, crude oil, reactivity and water treatment. Plan the answer, mark it against the level descriptors, then read a model Level 3.
How to use it: write your full answer first, then reveal the mark scheme and tick the points you made. AQA marks these by level — a detailed, linked answer — not by counting points, so the tick count is only a rough guide. Read the model answer to see what a Level 3 looks like.
Explain, in terms of particles, how increasing the temperature and increasing the concentration of a reactant each increase the rate of a chemical reaction.
Write your full answer first — then mark it.
Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. Explain, with reference to the ions present, which product forms at each electrode.
Write your full answer first — then mark it.
Crude oil is separated into useful fractions by fractional distillation. Describe how the process separates the crude oil, and explain why the hydrocarbons end up in different fractions.
Write your full answer first — then mark it.
Lithium, sodium and potassium all react with water. Describe what you would observe as each metal reacts, and explain why reactivity increases down Group 1.
Write your full answer first — then mark it.
Explain how potable water is produced from a fresh water source such as a reservoir, and explain why producing potable water from sea water needs a different and more expensive process.
Write your full answer first — then mark it.
The 6-markers are where the grades are
Send me your answer to one of these and I'll mark it like the examiner would — your first lesson is free.