Catalonia PAU Chemistry study guide
Catalonia PAU Chemistry · Work through your exam, one topic at a time.
La Química és una de les matèries de modalitat de les Proves d'Accés a la Universitat (PAU) a Catalunya, el conjunt d'exàmens que l'alumnat fa en acabar el batxillerat per accedir a estudis universitaris i, en la fase específica, per millorar la nota d'admissió en graus concrets. És per a estudiants de segon de batxillerat que han cursat Química com a matèria de modalitat i volen entrar en graus com Química, Farmàcia, Biotecnologia, Medicina, Enginyeria Química o Ciències Ambientals, on aquesta assignatura pondera en la nota d'accés. The Catalonia PAU Chemistry study guide has 9 sections and about 3,839 words.
01Atomic structure and the periodic table
The Catalonia PAU chemistry exam tests atomic structure through quantum-number sets, electron configurations, isotope calculations and the reasoning behind periodic trends. Questions are usually short, but every answer must be justified with the model - a bare number earns little credit.
399 words, about 2 min02Chemical bonding and intermolecular forces
This domain asks you to move from a molecular formula to a Lewis structure, then to geometry, hybridisation and polarity, and finally to macroscopic properties such as melting point, volatility and conductivity. Each step must be consistent with the previous one.
413 words, about 2 min03States of matter and properties of substances
This domain combines gas calculations with phase behaviour and solution properties. The exam typically supplies a set of conditions and asks for one derived quantity, so unit discipline matters more than memorising formulas.
429 words, about 2 min04Chemical equilibrium
Equilibrium questions test whether you can set up an ICE table, evaluate Kc or Kp from data, predict the direction of shift, and handle heterogeneous systems and solubility products. Approximations must be justified and units handled sensibly.
415 words, about 2 min05Acid–base equilibria
This domain covers pH of strong and weak species, hydrolysis of salts, buffer design and the shape of titration curves. Marks come from stating your approximations explicitly - for example neglecting water autoionisation - and reporting pH to a sensible number of decimals.
461 words, about 2 min06Oxidation–reduction and electrochemistry
Electrochemistry questions test oxidation-number assignment, balancing in acidic or basic medium, cell notation and EMF, the Nernst equation, and quantitative electrolysis. You need both the electron bookkeeping and the thermodynamic link ΔG° = −nFE°.
427 words, about 2 min07Chemical kinetics
Kinetics questions ask you to extract a rate law from experimental data, relate concentration to time, apply the Arrhenius equation, and propose a mechanism consistent with the observed order. Justifying an order from evidence is where most marks lie.
433 words, about 2 min08Thermochemistry and thermodynamics
This domain covers Hess's law, enthalpies of formation and bond energies, entropy changes, and the use of Gibbs energy to decide spontaneity and predict the temperature at which a reaction becomes feasible. Sign conventions carry most of the marks.
437 words, about 2 min09Organic chemistry
The organic chemistry domain tests functional-group recognition, IUPAC naming, isomer counting, identification of the mechanism type behind a transformation, and the structure and formation of polymers and biomolecules. Answers must follow the exact naming conventions demanded by the exam.
425 words, about 2 min