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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.
Triple Award Science, commonly referred to as Triple Science, results in three separate GCSEs in Biology, Chemistry and Physics and provide the broadest coverage of the main three science subjects. The qualifications are offered by the five main awarding bodies in England; AQA , Edexcel , OCR , CIE and Eduqas .
A single-displacement reaction, also known as single replacement reaction or exchange reaction, is an archaic concept in chemistry. It describes the stoichiometry of some chemical reactions in which one element or ligand is replaced by an atom or group. [1] [2] [3] It can be represented generically as:
In organometallic chemistry, a coordinatively unsaturated complex has fewer than 18 valence electrons and thus is susceptible to oxidative addition or coordination of an additional ligand. Unsaturation is the characteristic of many catalysts. The opposite of coordinatively unsaturated is coordinatively saturated.
In chemistry, deposition occurs when molecules settle out of a solution. Deposition can be defined as the process of direct transition of a substance from its gaseous form, on cooling, into a solid state without passing through the intermediate liquid state.
Inside Science is a weekly science programme broadcast on BBC Radio 4. [1] It was first broadcast on 4 July 2013, [ 2 ] one week after the final episode of its predecessor Material World . [ 3 ] As of December 2024 it is broadcast from 4:30–5:00 pm each Thursday, repeated at 8:30 pm the following Monday.
Atom economy. Atom economy (atom efficiency/percentage) is the conversion efficiency of a chemical process in terms of all atoms involved and the desired products produced. The simplest definition was introduced by Barry Trost in 1991 and is equal to the ratio between the mass of desired product to the total mass of reactants, expressed as a percentage.
) is a British educational television series about science and inventiveness which was originally produced and broadcast by the BBC from 1982 to 1986, and repeated until 1987. Devised and written by Clive Doig and Jeremy Beadle , [ 1 ] the series told the stories behind the inventions of commonplace objects.