GuidesPhysicsPaper 1 · last-minute revision
3 days to go

GCSE Physics Edexcel Paper 1: last-minute revision

Three days left. Edexcel Paper 1 covers motion and forces, energy, waves, light, and radioactivity in one sitting, so it's wide rather than deep. Here's the order that gets you the most marks.

Edexcel 1PH0
The plan

Your 3-day plan

One focus per day, building to a timed run. Work it in order.

3
3 days to go

Rebuild the equations you must recall from memory

  • Edexcel gives you an equations sheet, but it does not cover everything. Write out density (ρ = m/V), the wave speed equation (v = fλ), efficiency, and the specific heat capacity equation (ΔE = mcΔθ) from memory, then check them against your notes.
  • For each equation, do 3 rearrangements. Solve for each letter in turn. This is where marks are actually lost, not in recalling the equation itself.
  • Work through the energy equations: kinetic energy (Eₖ = ½mv²), gravitational potential energy (Eₚ = mgh), and power (P = E/t). Practise picking the right one from the numbers given, not the topic heading.
2
2 days to go

Core practicals and 6-mark questions

  • Redo the specific heat capacity core practical and the density core practical: method, control variables, and one source of error for each. Both regularly appear as long-answer method questions worth 5-6 marks.
  • Redo the core practicals on waves (measuring wavelength and frequency) and refraction (measuring the angle of refraction with a ray box and glass block). Know how to calculate refractive index from the angles you measure.
  • Practise one 6-mark 'describe the method' answer under timed conditions (roughly 8 minutes). These need a logical sequence with control variables named, not a list of equipment.
1
1 day to go

Light touch: consolidate, don't cram new content

  • Run through the priority topic list below using flashcards only. Don't open new content.
  • Redo 2-3 past exam questions on forces and energy transfers, checking your working against the mark scheme line by line.
  • Check unit conversions one more time: kW to W, minutes to seconds, cm² to m², g to kg. These cost easy marks every single sitting.
Priority order

The topics that come up most

Ranked from analysed past papers. Start at the top: if you run out of time, you will have covered the most-tested ground.

1

Forces and their effects

Motion and Forces opens Edexcel Paper 1 and carries the most content of any single topic area on the paper: resultant force, F = ma, and free-body diagrams appear across multiple questions.

2

Newton's laws and motion graphs

Distance-time and velocity-time graphs are tested every year, usually with a gradient or area-under-graph calculation attached to a Newton's second law question.

3

Energy stores and transfers

Edexcel's Conservation of Energy topic is examined as calculations (kinetic energy, GPE, work done) combined with 'describe the energy transfer' questions on the same paper.

4

Specific heat capacity

Tested through the core practical almost every sitting: a calculation using ΔE = mcΔθ plus a method or evaluation question on reducing heat loss.

5

Wave properties and calculations

The wave speed equation (v = fλ) is applied to both sound and light contexts, and the wave core practical (ripple tank or slinky) is a regular method question.

6

Reflection and refraction

Ray diagrams for reflection and refraction, plus the refractive index calculation from the core practical, are a consistent source of marks on this paper.

7

Radioactive decay

Alpha, beta and gamma properties, nuclear equations, and half-life calculations sit together as one examined block, often worth 6+ marks combined.

8

Half-life

Half-life graph reading and calculation questions appear alongside radioactive decay, and are frequently the highest-mark calculation on this section of the paper.

Your Knowledge Organisers

PrepWise has a one-page Knowledge Organiser for every topic above. In your final 3 days, use them the same way each time: cover the page, recall everything you can onto paper, check against the original, then repeat only the bits you missed.

Open the Physics Knowledge Organisers
Cheat sheet

Exam technique

Rules specific to Paper 1. On this paper, structure earns as many marks as knowledge.

1

Know what's NOT on the equations sheet

Edexcel's equations sheet covers many formulae, but density, efficiency, wave speed and the specific heat capacity equation are ones you're expected to know without looking them up in some question phrasings. Don't waste time searching the sheet for something you should already have memorised.

2

Show your substitution before you rearrange

Write the equation, then substitute the numbers in, then rearrange. Examiners give a mark for correct substitution even if your final rearranged answer is wrong. Rearranging first and substituting last hides your working and loses that mark.

3

Convert units before you calculate, not after

kW to W (×1000), minutes to seconds (×60), cm² to m² (÷10,000), g to kg (÷1000). Do the conversion in a separate line before you touch the main equation. Mixing units mid-calculation is the single most common way to lose an otherwise-correct answer.

4

Core practical questions want YOUR method, not a textbook one

'Describe how you would...' questions expect the specific apparatus and steps from the Edexcel core practicals (specific heat capacity, density, wave speed, refraction): control variables, what you measure, and how you calculate the result. Vague answers like 'measure it carefully' score zero.

5

Match your command word to your answer length

'State' wants one fact, no explanation. 'Describe' wants a sequence of steps or observations. 'Explain' wants a reason linked to a physics mechanism, using 'because' or 'this means'. Answering an 'explain' question with only a 'state' answer caps your marks well below the total available.

Avoid these

5 mistakes that cost marks

The errors examiners see most on this paper. Each one is an easy mark you already know how to keep.

Forgetting to square v in kinetic energy or squaring the wrong number in ΔE = mcΔθ-style equationsUnderline what needs squaring before you substitute. Write Eₖ = ½ × m × v² with v² marked, don't try to do it in your head.

Reading the wrong values off a distance-time or velocity-time graph, especially confusing gradient with area under the graphGradient of a distance-time graph gives speed. Gradient of a velocity-time graph gives acceleration. Area under a velocity-time graph gives distance. Say out loud which graph you're looking at before you calculate anything.

Leaving the answer in the wrong unit (e.g. giving energy in kJ or wavelength in cm without converting)Always write the unit next to your final answer and check it matches what the question asks for. If it doesn't match, you've likely skipped a conversion step.

Mixing up alpha, beta and gamma penetrating power and what stops each oneLearn the trio as one block: alpha stopped by paper, beta stopped by a few mm of aluminium, gamma needs thick lead or concrete to significantly reduce it. Always in that order.

Drawing a refraction ray diagram without a normal line, or measuring the angle from the surface instead of from the normalDraw the normal as a dashed line at 90 degrees to the boundary first. Every angle in reflection and refraction is measured from the normal, never from the surface itself.

Exam day

The morning of the exam

The 60 minutes before you walk in. Review what you know and settle your nerves.

  • Skim the priority topic list above one final time. Don't start anything new.
  • Reread your equations list once: density, efficiency, wave speed, specific heat capacity, kinetic energy, and GPE.
  • Check you have a calculator with working batteries and know how to use the exponent/squared button.
  • Remind yourself to show substitution before rearranging, and to name the normal line in any ray diagram.
  • Eat something and get to your seat with time to spare. Don't revise in the exam room queue: it raises stress without adding marks.
  • Once the paper starts, read every question fully before writing. Command words like 'calculate', 'explain' and 'describe' need different answer shapes.

Now test yourself

Knowing the equation is not the same as being able to use it. Practise exam-style Physics questions in PrepWise, get marked instantly, and drill the rearranging until it is automatic.

Practise Physics questions

Start the 3-day plan now

Open the Physics Knowledge Organisers, quiz every priority topic and walk in ready. Free during alpha.

Get started with your personalised revision
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