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  2. Glossary of chemistry terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemistry_terms

    Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...

  3. List of Cambridge International Examinations Ordinary Level ...

    en.wikipedia.org/wiki/List_of_Cambridge...

    Cannot be combined with syllabuses 0452 & 0614 , 4345, 7092 & 7175 (O Level).The Cambridge O Level Principles of Accounts 7110 syllabus has been revised and now has a new title and code: Cambridge O Level Accounting 7707. The last examination series for Cambridge O Level Principles of Accounts 7110 will be November 2019. [4] link: CIE 7115

  4. List of chemistry mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_chemistry_mnemonics

    Oh My, Such Good Apples. [33] Oh My Stars, Green Apples. Oh My, Such Good Apple Pie, Sweet As Sugar. [34] [35] Oh My Stars, Go Ahead Please [25] OMSGAPS - is a phonetic word for the first letters of the first seven dicarboxylic acids above in sequence can be said as below. Oh My Sir, Give A Party Soon.

  5. GCE Ordinary Level - Wikipedia

    en.wikipedia.org/wiki/GCE_Ordinary_Level

    In Brunei, the O-Level qualification is offered, with examinations conducted by Cambridge Assessment International Examinations (CAIE).. A number of subjects: English Language, English Literature, Bahasa Melayu (Malay language), Malay Literature, Islamic Religious Knowledge, Ulum al-Quran, Hafaz al-Quran, Tafsir al-Quran (Asas), History, Geography, Pure sciences (Physics, Chemistry and Biology ...

  6. GCE Ordinary Level (United Kingdom) - Wikipedia

    en.wikipedia.org/wiki/GCE_Ordinary_Level_(United...

    O-level logo. The General Certificate of Education (GCE) Ordinary Level, also called the O-level or O level, was a subject-based academic qualification.Introduced in 1951 as a replacement for the 16+ School Certificate (SC), the O-level would act as a pathway to the new, more in-depth and academically rigorous A-level (Advanced Level), in England, Wales and Northern Ireland.

  7. Singapore-Cambridge GCE Ordinary Level - Wikipedia

    en.wikipedia.org/wiki/Singapore-Cambridge_GCE...

    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]

  8. Chemistry - Wikipedia

    en.wikipedia.org/wiki/Chemistry

    Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.

  9. Glossary of chemical formulae - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_chemical_formulae

    As 2 O 5: arsenic pentoxide: 1303-28-2 As 2 S 4: arsenic tetrasulfide: 1303-32-8 As 2 S 5: arsenic pentasulfide: 1303-34-0 As 2 Se: arsenic hemiselenide: 1303-35-1 As 2 Se 3: arsenic triselenide: 1303-36-2 As 2 Se 5: arsenic pentaselenide: 1303-37-3 As 3 O 4: arsenic tetraoxide: 83527-53-1 As 3 P: arsenic(III) phosphide: 12512-11-7 As 4 O 3 ...