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  2. Periodic trends - Wikipedia

    en.wikipedia.org/wiki/Periodic_trends

    As one moves from left-to-right across a period in the modern periodic table, the ionization energy increases as the nuclear charge increases and the atomic size decreases. The decrease in the atomic size results in a more potent force of attraction between the electrons and the nucleus. However, suppose one moves down in a group.

  3. Electrochemistry - Wikipedia

    en.wikipedia.org/wiki/Electrochemistry

    English chemist John Daniell (left) and physicist Michael Faraday (right), both credited as founders of electrochemistry.. Electrochemistry is the branch of physical chemistry concerned with the relationship between electrical potential difference and identifiable chemical change.

  4. AP Chemistry - Wikipedia

    en.wikipedia.org/wiki/AP_Chemistry

    The 2014 AP Chemistry exam was the first administration of a redesigned test as a result of a redesigning of the AP Chemistry course. The exam format is now different from the previous years, with 60 multiple choice questions (now with only four answer choices per question), 3 long free response questions, and 4 short free response questions.

  5. Glossary of physics - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_physics

    An interdisciplinary field incorporating elements of physics, chemistry, and engineering that is concerned with the design and discovery of new materials, particularly solids. mathematical physics The application of mathematics to problems in physics and the development of mathematical methods suitable for such applications and for the ...

  6. Renewable energy - Wikipedia

    en.wikipedia.org/wiki/Renewable_energy

    Electricity generation requires large plants and ground temperatures of at least 150 °C (302 °F). In some countries, electricity produced from geothermal energy accounts for a large portion of the total, such as Kenya (43%) and Indonesia (5%). [130] Technical advances may eventually make geothermal power more widely available.

  7. Faraday's laws of electrolysis - Wikipedia

    en.wikipedia.org/wiki/Faraday's_laws_of_electrolysis

    Faraday discovered that when the same amount of electric current is passed through different electrolytes connected in series, the masses of the substances deposited or liberated at the electrodes are directly proportional to their respective chemical equivalent/equivalent weight (E). [3]

  8. SI base unit - Wikipedia

    en.wikipedia.org/wiki/SI_base_unit

    New base unit definitions were adopted on 16 November 2018, and they became effective on 20 May 2019. The definitions of the base units have been modified several times since the Metre Convention in 1875, and new additions of base units have occurred. Since the redefinition of the metre in 1960, the kilogram had been the only base unit still ...

  9. AP Physics - Wikipedia

    en.wikipedia.org/wiki/AP_Physics

    However, AP Physics 2 additionally covers thermodynamics, waves, sound, optics, and modern physics, [8] while AP Physics C: Electricity and Magnetism instead covers calculations involving electric flux, inductance, RL circuits, LC circuits, and the equations of Maxwell and Biot-Savart. [9] These topics are weighted on each exam as follows:

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