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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.
Education Scotland, formed in 2011, regulates education at school in Scotland, with qualifications monitored by the Scottish Qualifications Authority (SQA) and the Mathematics syllabus follows the country's Curriculum for Excellence. Scotland does not produce school league tables. Scotland has 5,050 schools, of which 350 are secondary.
Several languages of Wikipedia also maintain a reference desk, where volunteers answer questions from the general public. According to a study by Pnina Shachaf in the Journal of Documentation, the quality of the Wikipedia reference desk is comparable to a standard library reference desk, with an accuracy of 55 percent. [251]
Almost half could not add 218 and 191 compared to 73% internationally. Ministry of Education figures show the number of 12-year-olds who were able to answer simple multiplication questions correctly dropped from "47% in 2001 — the year new maths teaching methods were introduced — to 37% in 2009". [58]