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Inorganic compounds by element; List of alloys; List of alkanes; List of elements by name; List of minerals – List of minerals with Wikipedia articles; List of alchemical substances; Polyatomic ion – Ion containing two or more atoms; Exotic molecules – Atoms composed of exotic particles can form compounds
There are a total of 180 questions asked in the exam, 45 questions each from Physics, Chemistry, Botany and Zoology. Each correct response fetches 4 marks and each incorrect response gets -1 negative marking. The exam duration is 3 hours 20 minutes (200 min). The exam is of 720 marks (maximum marks).
the simplest aldehyde; an important precursor to many other chemical compounds, such as polymers and polyfunctional alcohols Formic acid: the simplest carboxylic acid; often used as a source of the hydride ion Grignard reagents: the most common application is for alkylation of aldehydes and ketones: [4] Hexamethylphosphoramide
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
Download as PDF; Printable version; In other projects Wikimedia Commons; ... (only simple oxides, oxyhalides, and related compounds, not hydroxides, carbonates, acids ...
This is a list of common chemical compounds with chemical formulae and CAS numbers, indexed by formula. This complements alternative listing at list of inorganic compounds . There is no complete list of chemical compounds since by nature the list would be infinite.
This is an index of lists of molecules (i.e. by year, number of atoms, etc.). Millions of molecules have existed in the universe since before the formation of Earth. Three of them, carbon dioxide, water and oxygen were necessary for the growth of life.
The most common synthetic method for butatriene synthesis is based on reductive coupling of a geminal dihalo vinylidene. [7] Tetraphenylbutatriene was reported synthesized in 1977 by homocoupling of 2,2-diphenyl-1,1,1-tribromoethane with elemental copper in dimethylformamide .