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The document based question was first used for the 1973 AP United States History Exam published by the College Board, created as a joint effort between Development Committee members Reverend Giles Hayes and Stephen Klein. Both were unhappy with student performance on free-response essays, and often found that students were "groping for half ...
This course is tailored for students interested in the field of psychology and as an opportunity to earn Advanced Placement credit or exemption from a college-level psychology course. It was the shortest AP exam until the AP Physics C exam was split into two separate exams in 2006.
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.
There are also two SL only courses: a transdisciplinary course, Environmental Systems and Societies, that satisfies Diploma requirements for Groups 3 and 4, [2] and Sports, Exercise and Health Science (previously, for last examinations in 2013, a pilot subject [3]). Astronomy also exists as a school-based syllabus.
In chemistry, a formula unit is the smallest unit of a non-molecular substance, such as an ionic compound, covalent network solid, or metal. [1] [2] It can also refer to the chemical formula for that unit. Those structures do not consist of discrete molecules, and so for them, the term formula unit is used.
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.
A. AP Chinese Language and Culture; AP Comparative Government and Politics; AP African American Studies; AP Art and Design; AP Art History; AP Biology; AP Calculus
In chemistry, the empirical formula of a chemical compound is the simplest whole number ratio of atoms present in a compound. [1] A simple example of this concept is that the empirical formula of sulfur monoxide , or SO, is simply SO, as is the empirical formula of disulfur dioxide , S 2 O 2 .