Dec
29
2011

Environmental Impact and Health Effects of Hydrogen

Hydrogen, the first element in the periodic table, is a colorless, odorless and insipid gas, formed by its diatomic molecules, in normal conditions. The hydrogen atom is formed by a nucleus with one unit of positive charge and one electron. It?s one of the main compounds of water and of all organic matter, and it?s [...]

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Nov
23
2011

Usage of Idioms in Standardized Exams Like Gre, Gmat,toefl

What is an Idiom? An idiom is an expression (i.e. term or phrase) the meaning of which cannot be inferred from the dictionary definitions and the arrangement of its elements, but refers instead to a figurative meaning that is known only through conventional use. This explanation is an adaptation from wikipedia. What I am concerned [...]

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