Physics & Chemistry Middle School Exam Prep 2026
Prepare for the physics & chemistry exam (25 points, 30min paper) with AI-generated study sheets, quizzes & flashcards.
Physics & Chemistry exam format
The brevet physics-chemistry exam is part of the science exam (1 hour total for 2 disciplines among biology, physics-chemistry, and technology). Physics-chemistry is graded out of 25 points when selected. The exercise generally has 3-4 parts: direct knowledge questions, document analysis (experiment graphs, measurement tables, setup diagrams), one or more calculations with formula application, and a reasoning or experimental approach question. Situations are often rooted in daily life (energy consumption, electrical safety, common chemical reactions). Calculators are allowed and useful formulas are generally provided in the problem statement.
Physics & Chemistry program for 2026 exams
The brevet physics-chemistry curriculum covers three major domains. Energy and its conversions: different energy forms (kinetic, potential, chemical, electrical, thermal), energy conversions and conservation, electrical energy (power, voltage, current, Ohm's law, P = U x I, E = P x t), electrical circuits (series, parallel, safety). Matter: matter organization (atoms, molecules, ions), chemical transformations (reactants, products, balanced equation), mass conservation, aqueous solutions (concentration, dissolution, dilution), distinction between physical and chemical transformation. Signals: light (straight-line propagation, speed, light-year), sound (frequency, period, propagation speed, hearing risks), electromagnetic spectrum, digital and analog signals.
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Tips to succeed in the physics & chemistry exam
Memorize fundamental formulas and know how to manipulate them both ways: U = R x I (Ohm's law), P = U x I (electrical power), E = P x t (energy), v = d/t (speed). In the brevet, formulas are often provided, but knowing how to rearrange them (isolate a variable) saves precious time.
Present your calculations neatly following the same pattern: write the literal formula, substitute numerical values with units, perform the calculation, give the result with the unit. This 4-step method is the standard expected by examiners and earns points even if the numerical result is wrong.
For chemical transformation questions, always check atom conservation: the number of atoms of each element must be identical in reactants and products. If asked to balance an equation, count atoms one by one on each side.
Revise electrical circuits by drawing standardized diagrams. Know the symbols (generator, lamp, switch, resistor, diode, ammeter, voltmeter) and where to place an ammeter (in series) and voltmeter (in parallel). Circuit questions appear very regularly.
In optics and acoustics, remember orders of magnitude: speed of light (3 x 10^8 m/s), speed of sound in air (340 m/s), hearing danger threshold (85 dB). Exercises often contextualize these concepts (thunderstorm, echo, noise safety): understand the physical principle behind each situation.
Common mistakes in physics & chemistry
Avoid these classic pitfalls to earn more points on exam day.
Forgetting units in calculations or giving a result in the wrong unit. If the problem gives time in minutes and the formula requires seconds, you must convert. Unit errors are the most frequent in brevet physics-chemistry and systematically cost points.
Confusing physical and chemical transformation. A change of state (melting, evaporation) is physical: molecules remain the same. Combustion or acid-base reaction is chemical: new molecules form. This distinction is fundamental and regularly tested.
Not converting units before applying a formula. Physics formulas work with International System units (meters, seconds, kilograms, amperes, volts). If data is in kilometers or hours, convert first.
Drawing non-standardized electrical circuits or forgetting current direction. Always use official symbols and indicate conventional current direction (from + to - outside the generator). A non-standardized diagram can be penalized even if the reasoning is correct.
FAQ about the physics & chemistry exam
Is physics-chemistry always present in the brevet science exam?
No, the science exam covers 2 of 3 disciplines (biology, physics-chemistry, technology). The random draw is announced by the ministry a few weeks before the exam, usually in early May. Physics-chemistry appears about 2 out of 3 years. Even if it's not drawn, study it: physics-chemistry knowledge is useful for other scientific disciplines and for high school.
How to succeed in physics-chemistry calculations in the brevet?
Systematically follow the 4-step method: 1) Write the literal formula (e.g., P = U x I). 2) Identify known quantities in the problem and convert them to the right units. 3) Replace letters with numerical values. 4) Calculate and give the result with the unit. Even if your final calculation is wrong, intermediate steps earn points. Always check that your result has a coherent order of magnitude.
Which physics-chemistry chapters appear most often in the brevet?
The most frequent chapters are electricity (circuits, Ohm's law, electrical power and energy) and chemical transformations (balanced equations, mass conservation). Sound and light appear regularly, along with energy and its conversions. Electricity questions are present in over 70% of brevet papers where physics-chemistry is drawn. Revise electricity as your top priority.
How to revise physics-chemistry in little time before the brevet?
If you have little time, focus on 3 areas: 1) Key formulas and their applications (U=RI, P=UxI, E=Pxt, v=d/t) with practice exercises. 2) Electrical circuits (diagrams, series/parallel, measurement device placement). 3) Chemical transformations (writing and balancing equations, mass conservation). Do 3 timed past papers to familiarize yourself with the format. Revizly study sheets condense the essentials to one page per chapter.
Are physics formulas given in the brevet problem statement?
Yes, most of the time useful formulas are provided in the problem statement. However, you must know how to use them correctly: isolate the requested variable, convert units, and apply the formula rigorously. Examiners evaluate the approach, not just the result. Knowing formulas by heart remains an advantage as it saves time and shows good command of the curriculum.
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