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Chemical elements and their atomic numbers
Every element of the periodic table and the number of protons in its nucleus.
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Chemical elements and their symbols
Every chemical element of the periodic table with the symbol that stands for it.
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Chemische Elemente und ihre Ordnungszahlen
Jedes Element des Periodensystems und die Zahl der Protonen in seinem Kern.
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Chemische Elemente und ihre Symbole
Jedes chemische Element des Periodensystems und das Symbol, das dafür steht.
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Elementos químicos y sus números atómicos
Cada elemento de la tabla periódica y el número de protones de su núcleo.
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Elementos químicos y sus símbolos
Cada elemento químico de la tabla periódica y el símbolo que lo representa.
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Earth, rocks and weather
Science exam questions on rocks and minerals, erosion, volcanoes and earthquakes, oceans and rivers, weather and climate, from the ARC Easy set.
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Moons of the Solar System
Each named natural satellite and the planet it orbits.
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Lunas del sistema solar
Cada satélite natural con nombre y el planeta alrededor del cual gira.
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Monde des Sonnensystems
Jeder benannte natürliche Satellit und der Planet, den er umkreist.
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Lunes du système solaire
Chaque satellite naturel nommé et la planète autour de laquelle il tourne.
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Ecology and ecosystems
Biomes and the abiotic world, population and community dynamics, energy flow through ecosystems, and conservation.
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Plant biology
Seedless and seed plants, the form and physiology of roots, stems and leaves, and how flowering plants reproduce.
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Genetics: inheritance, DNA and gene expression
From Mendel's crosses to chromosomes, DNA replication, transcription and translation, and the control of gene expression.
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Luas do Sistema Solar
Cada satélite natural com nome e o planeta ao redor do qual ele gira.
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Matter, forces and energy
Grade-school science exam questions on states of matter, atoms and elements, chemical change, forces and motion, heat, light, sound, electricity and magnetism, taken from the ARC question set. A few items reach into Earth science — the water cycle, the rotation of the Earth, the core and the geomagnetic field — where the question is still about matter, waves or energy.
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Science and Nature Trivia
Astronomy, biology, chemistry and physics questions from the community-built Open Trivia Database. One question per card, answered in full.
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Preguntas de ciencias escolares
Preguntas de ciencias del conjunto OpenBookQA, traducidas al español por traductores profesionales y revisadas por hablantes nativos. Cada tarjeta plantea una pregunta y la responde con el texto completo de la respuesta correcta.
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Evolution, speciation and phylogeny
Natural selection and genetic drift, how species split, and how phylogenetic trees record the history of life.
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Ciencias de la naturaleza, tecnología y astronomía
Preguntas abiertas del conjunto de prueba del MMLU, traducido al español por traductores humanos: física, química, biología celular y molecular, genética, evolución, botánica y ecología, anatomía y fisiología humanas, nutrición y fisiología del deporte, virología y nociones clínicas básicas, informática y seguridad informática, ingeniería eléctrica y electrónica, astronomía y ciencias de la Tierra. Cada tarjeta lleva la respuesta escrita por completo, nunca una letra.
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Química: preguntas del examen QIR
Preguntas abiertas de los exámenes QIR de acceso a la formación sanitaria especializada: química analítica, orgánica, inorgánica y física, y también bioquímica, biología molecular y biología clínica. Cada tarjeta lleva la respuesta escrita por completo, nunca una letra.
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Nuclear and particle physics
Radioactivity, the modes of decay, half-life and binding energy, the medical uses of radiation, fission and fusion, then quarks, leptons and the four fundamental forces.
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Gases, liquids and solids
Gas laws, kinetic molecular theory and effusion, then intermolecular forces, phase transitions and diagrams, and the lattice types of crystalline solids.
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Earth, rocks and weather — harder questions
The harder half of the same exams: questions on the rock cycle, erosion, the water cycle, weather systems and the history written in the ground.
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Matter, forces and energy — harder questions
The harder half of the same exams: questions on matter, chemical reactions, forces and energy that take a step of reasoning rather than a fact recalled.
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Ciencia y tecnología
Preguntas abiertas de seguridad informática, informática, aprendizaje automático, electrotecnia, química y física.
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Electromagnetic waves and optics
Maxwell's prediction and the electromagnetic spectrum, then reflection, refraction, mirrors and lenses, the eye and optical instruments, and the interference, diffraction and polarisation of light.
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Physik-Abitur: weitere Prüfungsfragen
Zweite Reihe offener Prüfungsfragen aus der schriftlichen Physikprüfung zum Abitur, quer durch den Lehrplan: Mechanik und Wärmelehre, Gravitation und Astronomie, Elektrizität und Magnetismus, Optik, Atom- und Kernphysik. Enthält, was das bestehende Physikpaket des Katalogs übrig gelassen hat — keine Karte kommt doppelt vor. Jede Karte nennt die richtige Antwort im Klartext, nie einen Buchstaben. Die Aufgaben stammen aus dem ungarischen Abitur in seiner amtlichen deutschsprachigen Fassung; deren Wortlaut ist unverändert übernommen, samt einzelner Übersetzungsholprigkeiten der amtlichen Fassung („die in der Feder speicherte Energie“, „zwei frei Protonen“). Die Karten sind Verständnisfragen ohne Rechenaufgaben; sie prüfen physikalische Zusammenhänge, keine Zahlenwerte.
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Organic and nuclear chemistry
Hydrocarbons and the main functional groups, then nuclear structure and binding energy, the modes of radioactive decay, fission and fusion, and the biological effects of radiation.
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Fluids, temperature, heat and thermodynamics
Density, pressure and buoyancy, Bernoulli's principle and viscosity, then temperature scales and the gas laws, heat capacity and heat transfer, and the laws of thermodynamics with entropy.
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Kinetics, equilibrium and acid-base chemistry
Reaction rates and rate laws, collision theory, mechanisms and catalysis, the equilibrium constant and Le Chatelier's principle, then acids, bases, buffers, titration and solubility products.
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Circuits, magnetism and induction
Series and parallel circuits, Kirchhoff's rules and meters, magnetic fields and forces on moving charges, then Faraday's law, inductance, transformers and AC circuits.
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Electric charge, potential and current
Charge, conductors and Coulomb's law, electric fields and field lines, potential and capacitance, then current, resistance, Ohm's law and electric power.
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Metals, nonmetals and coordination chemistry
The representative metals, metalloids and nonmetals group by group, then the transition metals: their occurrence, coordination complexes, ligands, isomerism and crystal field theory.
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Chemical bonding and molecular geometry
Ionic and covalent bonding, Lewis structures, formal charge and resonance, VSEPR geometry and polarity, then valence bond theory, hybridisation and molecular orbitals.
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Statistics: sampling, description and probability
Populations and samples, the sampling designs and the biases that spoil them, levels of measurement, the graphical and numerical summaries of data, then the vocabulary of probability.
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Physics: measurement and motion
Units, models and orders of magnitude, then motion in one and two dimensions: displacement, velocity, acceleration, free fall, vectors and projectile motion.
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Relativity, quanta and the atom
Special relativity and its consequences, the photoelectric effect and wave-particle duality, the uncertainty principle, then atomic structure, spectra and lasers.
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Atoms, molecules, ions and composition
Atomic theory and chemical symbols, the periodic table and the families that divide it, ionic and covalent compounds and the rules used to name them, then chemical formulas, formula and molar mass, and the units that express the concentration of a solution.
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Work, energy, momentum and rotation
Work, kinetic and potential energy, power and conservation, then impulse and collisions, statics and torque, and the rotational quantities that mirror the linear ones.
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Electronic structure and periodic properties
Electromagnetic radiation and quantum theory, orbitals and quantum numbers, electron configurations, and the periodic trends in size, ionisation energy and electron affinity.
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Mathematics Trivia
Numbers, shapes, theorems and notation, from the community-built Open Trivia Database. One question per card, answered in full.
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Stoichiometry of chemical reactions
Writing and balancing chemical equations, reaction stoichiometry, limiting reactants and percent yield, then the precipitation, acid-base and oxidation-reduction classes of reaction.
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Chemistry: essential ideas
What chemistry measures and how: states and properties of matter, the scientific method, SI units and derived units, significant figures, accuracy and precision.
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Oscillations, waves and sound
Simple harmonic motion, pendulums, resonance and damping, then the physics of sound: intensity and decibels, the Doppler effect, standing waves, beats and hearing.
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Forces, Newton's laws and circular motion
The three laws of motion and the four fundamental forces, friction, drag and elasticity, then uniform circular motion, centripetal force and Newton's law of gravitation.
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Harder science questions
Grade-school science exam questions from the harder, reasoning-heavy half of the ARC set: each one takes a step of reasoning rather than a fact you either know or do not. Physics, chemistry, biology, Earth and space science. Each card asks one question and answers it in full — no multiple-choice letters, no figure or table to look at, and no card resting on a date, a quantity or a number.
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Biologia, química, física e computação
Perguntas abertas e definições de biologia celular e do desenvolvimento, genética, nutrição, química, física conceitual, eletrotécnica, redes e segurança da informação.
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Física de bachillerato: más preguntas de examen
Preguntas abiertas del examen escrito de física de bachillerato, de todo el temario: mecánica y termodinámica, gravitación y astronomía, electricidad y magnetismo, óptica, física atómica y nuclear. Amplía el paquete «Preguntas de examen de física», ya presente en el catálogo: se ha comprobado una a una que ninguna tarjeta se repite entre los dos. Cada tarjeta lleva la respuesta correcta escrita por extenso, nunca una letra. Los enunciados proceden de la prueba húngara de fin de secundaria en su versión oficial en español.
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Electrochemistry
Balancing redox reactions, galvanic and electrolytic cells, standard electrode potentials, the Nernst equation, batteries, fuel cells and corrosion.
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Grade-school science questions
Thirty-three science questions from real grade-school exams, taken from the ARC Easy set. Each card asks one question and gives the correct answer in words, with no option letters and no answer grid. Some questions open with a short scenario; the answer is always the one the exam marked correct, kept word for word.
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Thermochemistry and thermodynamics
Heat, work, enthalpy and calorimetry, then entropy, the second and third laws, Gibbs free energy and what makes a process spontaneous.
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Naturwissenschaft, Medizin und Technik
Offene Fragen zu Chemie, Physik, Astronomie, Elektrotechnik, Informatik und IT-Sicherheit sowie zu Biologie, Ernährung und Medizin. Jede Karte trägt eine einzelne, überprüfbare Sachantwort; die Fragen stammen aus dem MMLU-Testsatz und wurden aus Multiple-Choice-Aufgaben in freie Frage-Antwort-Karten umgewandelt.
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Solutions and colloids
The dissolution process and solubility, electrolytes, the colligative properties — vapour pressure, boiling point, freezing point, osmosis — and the behaviour of colloids.