Students who have chosen the physical-chemistry specialty will have to look at the event this June 17 and 18. Here are the most likely subjects.
The baccalaureate tests are linked. After the traditional subject of philosophy, students pass their specialty tests this June 17 and 18. They each worth for 16% of the final note. For those who chose physics-chemistry, they have 3:30 to deal with three independent exercises. They will then obtain one in 20 note, which will be added to that of the practical test previously passed. The overall note for material is then obtained by multiplying by 0.8 the note of the written part and by 0.2 the note of the practical part. These two results are then added.
Sheets, exercises, students must have prepared well and have revised enough, without neglecting any part of the program. However, the subjects of subjects relate only to the final year program. A theme is addressed by exercise and additional documents can be added to carry out the test. Three main themes stand out every year from the program: mechanics, reaction chemistry and waves and signals. They represent 60% of the questions asked over the past five years.
What are the subjects deemed probable for the baccalaureate of physics-chemistry 2025?
Some specialized sites also give tracks on the most likely subjects for this year, relying on the past subjects in the past years. According to Digischoolwhich makes an estimate of the probable subjects for 2025, the notions which would be most likely to fall are the meaning of evolution of an acid-base system, the evolution of a siege system of a nuclear transformation, the dynamics of an electrical system, wave phenomena or perfect gas. The flow of a fluid, the light or the analysis of a chemical system can also be selected. Other subjects appear to be less likely, such as the description of the movement, organic synthetic strategies, the sense of evolution of an oxidizing-relevant system and the evolution of a system seat of a chemical transformation.
According to Annabacthe questions that often return to the exercises are: “write the equation of an acid-base reaction”, “determine the concentration of Oxonium H3O+ ions of an aqueous solution whose pH is known”, “identify kinetic factors and/or the effect of a catalyst”, “write the equation of a radioactive disintegration”, “determine the spontaneous sense of evolution of a chemical system” Movement “or” Determine the value of a physical quantity characteristic of a gas “.
Subjects already fallen into foreign centers
It is interesting to look at the first subjects of physics-chemistry to have fallen to BAC 2025, especially that for the baccalaureate holders of foreign centers in North America given in May. He focused on studying a nail polish, road connections and water treatment.
The subjects in foreign centers in Asia also fell on June 11. In particular, it was asked to work on a sanitary installation (thermal transfer, pressure, speed …) then around ammoniacal pollution (acid, Lewis diagram …) or even to study a pear aroma (synthesis of the pentyle ethanoate, reaction equation …). For their part, the high school students who spent their test in Africa fell on the study of the rosat geranium (pelargonic acid), then that of an educational radar equipped with a solar panel (power supply and speed) and finally on that of the hidden face of the moon (satellite).
It is also recommended to look into the subjects of previous years. In subjects 2024 were, for example, the study of Thymol blue, the sound and speed of an airplane in flight or the analysis of the friction force undergone by a telephone during a fall.
In technological sectors, the test is common for all candidates of the STI2D and STL series having chosen the specialty physical and chemical sciences in the laboratory (SPCL). It lasts 3 hours and is of coefficient 4. It also relates to the concepts of terminal. It is a thematic approach, based on contemporary scientific and technological applications of the notions of physics-chemistry.
What are the dates of the bac of physics-chemistry 2025?
For this 2025 edition of the Bac de Physique-Chemistry, here are the dates to know.
- Tuesday 17 or Wednesday 18 June 2025 from 2 pm to 5.30 p.m.: Written test of physical-chemistry specialty
- Friday July 4, 2025: Results of the tests
- Between Monday 7 and Wednesday, July 9, 2025: Cattening events
- Between Monday 8 and Thursday 11 September 2025: replacement events