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  2. 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.

  3. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.

  4. Advanced Placement exams - Wikipedia

    en.wikipedia.org/wiki/Advanced_Placement_exams

    Advanced Placement (AP) examinations are exams offered in United States by the College Board and are taken each May by students. The tests are the culmination of year-long Advanced Placement (AP) courses, which are typically offered at the high school level. AP exams (with few exceptions [1]) have a multiple-choice section and a free-response ...

  5. Advanced Placement - Wikipedia

    en.wikipedia.org/wiki/Advanced_Placement

    AP Physics 1: Algebra-Based and AP Physics 2: Algebra-Based [65] Fluids, which used to be Unit 1 in AP Physics 2, became Unit 8 in AP Physics 1. With Fluids no longer being in its curriculum, the section of AP Physics 2 that covered Waves and Optics was split into two units that covered the topic with more depth.

  6. Torricelli's experiment - Wikipedia

    en.wikipedia.org/wiki/Torricelli's_experiment

    For much of human history, the pressure of gases like air was ignored, denied, or taken for granted, but as early as the 6th century BC, Greek philosopher Anaximenes of Miletus claimed that all things are made of air that is simply changed by varying levels of pressure.

  7. North Korea condemns US military drills with South Korea and ...

    www.aol.com/news/north-korea-condemns-us...

    North Korea condemned on Saturday recent joint military drills by the United States, South Korea and Japan, warning that it would take immediate actions if needed to defend the state. Last week ...

  8. Macy’s is in deep trouble. It could be sitting on a gold mine

    www.aol.com/macy-deep-trouble-could-sitting...

    Macy’s would be more valuable if it just shut down its business and sold everything off for parts.

  9. Svedberg - Wikipedia

    en.wikipedia.org/wiki/Svedberg

    A laboratory ultracentrifuge. In chemistry, a Svedberg unit or svedberg (symbol S, sometimes Sv [a]) is a non-SI metric unit for sedimentation coefficients.The Svedberg unit offers a measure of a particle's size indirectly based on its sedimentation rate under acceleration (i.e. how fast a particle of given size and shape settles out of suspension). [1]