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  2. BBC Bitesize - Wikipedia

    en.wikipedia.org/wiki/BBC_Bitesize

    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.

  3. GCSE Science - Wikipedia

    en.wikipedia.org/wiki/GCSE_Science

    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 .

  4. BBC Online - Wikipedia

    en.wikipedia.org/wiki/BBC_Online

    BBC Online, formerly known as BBCi, is the BBC's online service. It is a large network of websites including such high-profile sites as BBC News and Sport, the on-demand video and radio services branded BBC iPlayer and BBC Sounds, the children's sites CBBC and CBeebies, and learning services such as Bitesize and Own It.

  5. Bobby Seagull - Wikipedia

    en.wikipedia.org/wiki/Bobby_Seagull

    He has created maths puzzles for BBC Bitesize, as well as working with Rachel Riley. [14] Seagull releases regular maths challenges on BBC Radio 4. [15] In 2018 he taught mathematics to three BBC News presenters, Naga Munchetty, Jayne McCubbin and Tim Muffett, before they retook their General Certificate of Secondary Education (GCSE ...

  6. Reactivity series - Wikipedia

    en.wikipedia.org/wiki/Reactivity_series

    In chemistry, a reactivity series (or reactivity series of elements) is an empirical, calculated, and structurally analytical progression [1] of a series of metals, arranged by their "reactivity" from highest to lowest.

  7. Branching (polymer chemistry) - Wikipedia

    en.wikipedia.org/wiki/Branching_(polymer_chemistry)

    In polymer chemistry, branching is the regular or irregular attachment of side chains to a polymer's backbone chain. It occurs by the replacement of a substituent (e.g. a hydrogen atom) on a monomer subunit by another covalently-bonded chain of that polymer; or, in the case of a graft copolymer, by a chain of another type.

  8. Precipitation (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Precipitation_(chemistry)

    The notion of precipitation can also be extended to other domains of chemistry (organic chemistry and biochemistry) and even be applied to the solid phases (e.g. metallurgy and alloys) when solid impurities segregate from a solid phase.

  9. BBC Schools - Wikipedia

    en.wikipedia.org/wiki/BBC_Schools

    The BBC began broadcasting schools programmes on television on 24 September 1957, airing in the afternoon. Morning transmissions began on 19 September 1960. Until 1972, schools programming along with adult education programmes were usually the only daytime programmes shown on both BBC and ITV, as the government regulated and restricted the ...