Physics-chemistry subject at the baccalaureate (specialty): what are the likely topics?


Physics-chemistry subject at the baccalaureate (specialty): what are the likely topics?

SUBJECTS PHYSICS CHEMISTRY. Hundreds of high school students will work on the written physics-chemistry specialty test for the 2023 baccalaureate on March 20 and 21. What form will the exam take? What topics are likely to fall?

Less than a week before the 2023 baccalaureate specialty exams, high school students begin the final revisions. To each his own subjects, but the candidates who have decided to follow the physics and chemistry courses in Première and Terminale have no choice but to familiarize themselves with the formulas and methodologies... Their courses more simply. Monday 20 and Tuesday 21 March, the students will work for four hours on their subject, from 2 p.m. to 5.30 p.m. in mainland France and Mayotte and from 8 a.m. to 11.30 a.m. in the other overseas departments. With one session per day, it is obvious that the subject will be different from one event to another.

This 3h30 written test is only the first stage of the physics-chemistry specialty test at the baccalaureate. After the writing, candidates adept in physical sciences will be assessed on a practical test, organized between March 28 and 31. Still, the table exam represents 80% of the final grade in physics and chemistry, which has a coefficient of 16 in the bac average. And for this test, several notions will have to be mobilized in each of the three independent exercises.

It is imperative to know your courses to hope to pass the 2023 baccalaureate exam, but when it comes time for revisions it is a question of prioritizing certain themes. The subjects of the physics-chemistry specialty test may relate to one of the four main themes covered in the Terminale program: "constitution and transformation of matter", "movement and interactions", "energy: conversions and transfer or "waves and signals". But it is possible to narrow the field of revisions a little more thanks to the prognoses of different teachers.

This year, according to Digischool who worked in collaboration with teachers, the subject of physics-chemistry could emphasize:

If these subjects have a high probability of falling, according to some teachers, other subjects such as the evolutions and direction of evolution of systems (oxidant-reducer or acid-base), wave phenomena or the images and light chapter should not be completely ruled out. . Keep in mind that these are only guesses and that all subjects listed by the Ministry of National Education may fall on the day of the test.

It should be noted that in addition to the courses, certain specific notions or in connection with several chapters are essential, as well as formulas, physical or chemical reactions, etc. As well as methodologies to demonstrate scientific reasoning. Moreover, it is advised to always write the literal formulas before carrying out its calculation, it is a detail of presentation which can make gain points easily.

What better way to prepare for an exam than to consult the subjects of previous years? The Internet user gives you direct access to a suggested answer to the latest topics. An associate professor was responsible for writing the answers and developments expected during the test to deliver a complete and detailed answer key for the exam to baccalaureate candidates.

Of the two subjects of the 2022 baccalaureate, the first offered a main exercise, scored out of 10 points, focused on chemistry with the study of the behavior of molecules in relation to the dye E127, when the other exercises dealt with the physics of juggling or operation of a cardiac defibrillator. The order of the exercises was reversed in the second subject with a first exercise focused on physics and the observation of the planet Mars, while the other problems were interested in the aroma of vanilla or the functioning of batteries. For each subject, the students had documents to help their thinking. Note that the use of the calculator is most often authorized, unless otherwise indicated on the first page of the exam.

After the written physics-chemistry test on March 20 and 21, the practical test will last one hour and will be held for all candidates between March 28 and 31 according to the times of the invitation. On the subject side, no exercises common to all candidates but a certain number of assessment situations among those available on the national subject bank of National Education. However, the ministry specifies a few scientific manipulations on which candidates cannot be evaluated:

At the time of the examination, the candidate draws lots for an evaluation situation "from a subset, renewed every half-day, of at least two predominantly physical evaluation situations and two predominantly physical evaluation situations. chemistry," according to the ministry. He then has one hour to perform the requested manipulations.

If the specialty exams are held several months before the written philosophy, French or major oral exams, the results will be published at the same time for all baccalaureate exams, i.e. Tuesday, July 4, 2023. As a reminder, the exam of physics-chemistry being composed of two parts, the final mark is obtained by multiplying by 0.8 the mark of the written test and by 0.2 that of the practical test.