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The idea of a national science policy for Sri Lanka was first discussed in the 1980s, although the matter did not move forward in any concrete way for several decades due to the more pressing economic and budgetary needs of the civil war on successive administrations. [6]
The following outline acts as an overview of and topical guide to chemistry: . Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions.
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.
The steric number of a central atom in a molecule is the number of atoms bonded to that central atom, called its coordination number, plus the number of lone pairs of valence electrons on the central atom. [11] In the molecule SF 4, for example, the central sulfur atom has four ligands; the coordination number of sulfur is four. In addition to ...
Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms. [1] Study of structure determines their structural formula.
The Faculty of Natural Sciences was established in 1987 [11] and consists of the six following departments: 1. Department of Botany 2. Department of Chemistry 3. Department of Computer Science 4. Department of Mathematics 5. Department of Physics 6. Department of Zoology
The exams are held in three mediums Sinhala, Tamil and English. The exam is the basic Certificate awarded in Sri Lanka as proof of completion of Secondary Education. The GCE O/L examination is an important milestone for students as it determines their eligibility to pursue further studies at the Advanced Level (A/L) or vocational training courses.
A chemistry test tube typically has a flat bottom, a round bottom, or a conical bottom. Some test tubes are made to accept a ground glass stopper or a screw cap . They are often provided with a small ground glass or white glaze area near the top for labelling with a pencil.