GCSE Science Equations to Memorise: Full List by Exam Board

Overview

This article is a practical hub for GCSE science equations to memorise. It is designed for students taking Combined Science or Triple Science and for anyone using AQA, Edexcel or OCR specifications as a guide for revision. The aim is not to replace your specification or your school’s official formula list. Instead, it helps you build a revision system so you can quickly check three things:

• which equations belong to biology, chemistry and physics
• which formulas are regularly tested in calculations and multi-step questions
• how to revise equations so you can use them accurately in the exam

The most important starting point is this: always check your own exam board specification and the most recent exam guidance from your school or board. Formula sheet rules can change, and Combined Science does not always match Triple Science in exactly the same way. That is why an exam-board-aware approach matters more than memorising a random list from the internet.

In GCSE Science, equations matter most in physics, but they also appear in chemistry and, less often, in quantitative biology. Students often search for a full GCSE physics equations list and stop there. That is understandable, but it is only part of the picture. A strong revision plan should separate equations into four groups:

1. Core calculation equations that appear repeatedly in exam questions.
2. Practical equations linked to required practicals, graphs and data analysis.
3. Chemistry quantitative relationships such as concentration, energy changes or rate calculations.
4. Biology data-handling formulas such as magnification or percentage change where relevant to your course.

That structure is more useful than one long unorganised sheet because exam questions are rarely asking, “Write down a formula.” More often they ask you to choose the right equation, substitute values with correct units, rearrange if needed, and give a final answer to an appropriate number of significant figures or decimal places.

So the goal of this hub is simple: help you turn formulas from a memory problem into a method problem. Once you know how the equation behaves in context, it becomes easier to remember and much easier to use.

Topic map

Use this topic map as a revision route through the major areas of GCSE science revision where equations matter.

1. Biology equations and calculations

Biology usually contains fewer formal equations than physics, but calculation marks still matter. Common areas include:

• magnification
• percentage increase and percentage decrease
• surface area to volume ideas
• rate-style calculations in practical work
• interpreting graphs in ecology, enzymes or population questions

Biology calculations often look simple, but the exam challenge is usually in interpreting the context correctly. Students lose marks by copying values from the wrong column in a table, forgetting units, or rounding too early.

2. Chemistry equations and quantitative skills

GCSE chemistry equations often sit inside wider quantitative topics rather than appearing as a standalone formula test. Common areas include:

• relative formula mass calculations
• moles relationships where relevant to your course
• concentration calculations
• energy changes and bond energies
• rate of reaction calculations and graph interpretation
• gas volume relationships where specified

In chemistry, the biggest challenge is often deciding which numbers in the question matter. A concentration question, for example, may include a volume, a unit conversion and a context such as titration or preparation of a solution. To prepare well, revise equations with the topic they belong to, not in isolation.

3. Physics equations: the highest-priority area

For most students, the phrase formula sheet GCSE science really means physics. This is where the largest number of named equations usually appears, including formulas linked to:

• speed, distance and time
• acceleration and motion
• force, work done and power
• energy stores and energy transfers
• momentum ideas where included
• waves, frequency and wave speed
• electric circuits, including current, potential difference, resistance, charge and power
• density, pressure and efficiency

Physics revision becomes easier when you sort equations by topic and by skill level:

• Foundation level use: direct substitution into familiar equations
• Higher level use: rearranging equations, combining two formulas, and applying them in less obvious contexts

This distinction matters because some students over-revise difficult rearrangements before they can even choose the correct formula in the first place. Start with recognition, then substitution, then unit conversion, then rearrangement.

4. Combined Science versus Triple Science

If you are unsure which formulas apply to you, first check whether you are taking Combined Science or Triple Science. The number and range of equations can differ by route and specification. If you need help with that distinction, read GCSE Triple Science vs Combined Science: Subjects, Grades and Revision Differences.

Students on Combined Science should be especially careful not to revise from a Triple Science list without checking it. That can waste time and create unnecessary stress.

5. Exam board layer: AQA, Edexcel and OCR

When students search for AQA Edexcel OCR science equations, what they usually need is not three separate panic lists, but a simple checking process:

1. Find your exact specification name.
2. Open the official equation or formula information for that specification.
3. Mark each equation as one of three categories: given, sometimes given, or revise carefully.
4. Match each formula to a topic and at least two exam-style questions.

This approach works whether you are doing AQA science revision, Edexcel science revision or OCR science revision. It avoids the common mistake of treating all GCSE Science courses as identical.

Related subtopics

Equations are easiest to remember when linked to the surrounding science, practical work and exam technique. These are the subtopics worth revising alongside your formula list.

Required practicals

Many science equations become clearer when you see where they come from in an experiment. A speed equation makes more sense after measuring distance and time. Resistance and current become easier when you have seen circuit data in a table. Density becomes more memorable when tied to mass and volume measurements.

For physics practical links, see GCSE Physics Required Practicals Explained: Equations, Methods and Typical Questions. If you are following OCR or Edexcel practical content, these guides are useful starting points:

• OCR GCSE Science Required Practicals: Topic-by-Topic Revision List
• Edexcel GCSE Science Required Practicals: Full List and What to Learn

Required practical revision is one of the best ways to make formulas feel less abstract.

Units and conversions

A large number of equation errors are actually unit errors. Students often know the formula but miss the mark because they leave minutes instead of seconds, centimetres instead of metres, or grams instead of kilograms where the question expects standard units.

Create a short conversion list for the units that appear most often in your course. Keep it on the same sheet as your equations. This is especially useful in physics.

Rearranging equations

Knowing a formula is not enough if the exam asks for a different variable. Rearranging equations should be practised in small steps. Start with one-step rearrangements, then move to forms with brackets, squares or fractions if your course requires them. Write each version clearly and check it by substituting numbers back in.

Graphs and proportional reasoning

Some questions do not require you to quote a formula directly, but they still test the same mathematical understanding. If you can explain that doubling one variable doubles another, or read a gradient correctly, you are much less likely to misuse an equation in the exam.

Past paper practice

Equations become secure when you see how examiners actually ask about them. Use topic-based questions first, then full papers. Build a simple log with these columns:

• equation tested
• topic
• mistake made
• why the mistake happened
• what to do next time

If you are revising a wider course map, GCSE Combined Science Revision by Topic: Biology, Chemistry and Physics Checklist can help you place equations inside a broader plan rather than treating them as a separate subject.

How to use this hub

The best way to use this page is as a checkpoint, not as a cramming sheet. Come back to it as you build your own revision pack.

Step 1: Build your board-specific list

Take your specification and create a personal equation checklist. Divide it into biology, chemistry and physics. Then mark each formula with one of these labels:

• Know well — you can choose and use it correctly
• Recognise only — you know the formula when you see it but hesitate alone
• Needs work — you are unsure of the formula, symbols or units

This is more useful than pretending everything needs the same amount of revision.

Step 2: Learn symbols with meaning

Do not memorise equations as random letters. Every time you write a formula, say what each symbol represents and what unit it usually takes. For example, if you revise a speed formula, include distance in metres and time in seconds. That habit cuts down careless errors later.

Step 3: Pair every formula with a worked example

Each equation should have at least one straightforward example and one exam-style example. The straightforward version checks memory. The exam-style version checks whether you can recognise the formula inside context.

Step 4: Practise reverse questions

Many students only practise finding the value usually written on the left-hand side of the equation. Instead, also practise finding the other variables. This prepares you for rearrangement without making algebra feel separate from science.

Step 5: Use flashcards carefully

Flashcards work well for formula recall, but only if they go beyond copying. A useful card might include:

• front: the topic and the quantities involved
• back: the equation, units, and one common mistake

If you like this style of revision support, Smart classroom flashcards: key terms every student should know offers ideas you can adapt for science formulas as well as vocabulary.

Step 6: Train for 6-mark and calculation method marks

Equations do not only appear in one-mark answers. In longer questions, marks are often available for selecting the correct formula, showing substitution, rearranging correctly, using units and giving a sensible final answer. Write out your steps clearly. Even when the final number is wrong, method marks may still depend on the working being visible.

Step 7: Keep a mistakes notebook

Your revision becomes much more effective when you track patterns. Common equation mistakes include:

• choosing a formula from the wrong topic
• confusing symbols with similar letters
• forgetting to convert units
• entering numbers into the calculator in the wrong order
• rounding too early
• copying a value incorrectly from the question

A short notebook of repeated errors is often more valuable than another poster on the wall.

When to revisit

This hub is worth revisiting whenever your revision needs become more specific. Equations are not a one-off topic; they change in importance depending on where you are in the course and how exam guidance develops.

Come back to this page when:

• you start a new physics, chemistry or biology calculation topic
• your teacher gives you an updated formula list or specification reminder
• you move from class notes to past paper practice
• you realise your errors are mostly method and unit mistakes rather than knowledge gaps
• you switch from Combined Science revision notes to Triple Science materials, or the other way round
• exam board guidance about provided equations or formula sheets changes

The most practical next step is to make your own one-page equation audit today:

1. Write your exam board and course route at the top.
2. List equations by subject and topic.
3. Highlight the ones you use often in past papers.
4. Circle any formula you can recognise but not use confidently.
5. Add one worked example beside each weak area.
6. Re-test yourself in two or three days, then again the following week.

If you do that consistently, equations stop being a last-minute panic topic and become part of normal GCSE science revision. That is the real aim of this hub: not just to give you a list, but to give you a repeatable way to check, practise and improve whenever your course, paper practice or exam-board guidance moves on.