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The halogens (/ ˈ h æ l ə dʒ ə n, ˈ h eɪ-,-l oʊ-,-ˌ dʒ ɛ n / [1] [2] [3]) are a group in the periodic table consisting of six chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and the radioactive elements astatine (At) and tennessine (Ts), though some authors [4] would exclude tennessine as its chemistry is unknown and is theoretically expected to ...
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.
GCSE Bitesize was launched in January 1998, covering seven subjects. For each subject, a one- or two-hour long TV programme would be broadcast overnight in the BBC Learning Zone block, and supporting material was available in books and on the BBC website. At the time, only around 9% of UK households had access to the internet at home.
The Singapore-Cambridge General Certificate of Education Ordinary Level (or Singapore-Cambridge GCE O-Level) is a GCE Ordinary Level examination held annually in Singapore and is jointly conducted by the Ministry of Education (MOE), Singapore Examinations and Assessment Board (SEAB) and the University of Cambridge Local Examinations Syndicate (UCLES). [1]
This is a list of important publications in chemistry, organized by field. [1] [2] [3] [4]Some factors that correlate with publication notability include: Topic creator – A publication that created a new topic.
GCSE grades 3 to 1 (D to G) – Certificate and qualification awarded. At GCSE, awards a qualification at Level 1 of the RQF. U: ungraded/unclassified – no certificate or qualification awarded ^a 9–1 grades phased in by subject between 2017 and 2019 in England ^b New A*–G grades in Northern Ireland from 2019 [24]
The UK Government introduced a new performance indicator called the English Baccalaureate, which measures the percentage of students in a school who achieve 5+ A*-C grades (now five Grades 4 to 9 since the GCSE Reforms) in English, mathematics, two sciences, a foreign language and history or geography at GCSE level. [3]
Winner of the IPG Educational Publisher award in 2009, Galore Park's extensive range includes ISEB Revision Guides, Practice Exercise books, Junior textbooks (for 7–11 year olds), Common Entrance textbooks (for 11-13 year olds), A* GCSE/ International GCSE Study Guides and online revision aid GOPrep, providing Maths and Science practice at 13+.