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Atmosphere

Atmosphere

The atmosphere is a term used to describe the mixture of different gasses that surrounds Earth. These gases consist predominantly of nitrogen, oxygen, argon, carbon dioxide, and water vapour. Read more..

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Atom

Atom

Atom is a neutral particle having one nucleus, an unimaginably small particle that could not be made any smaller and still behaves as a chemical system. Read more..

Atom economy

Atom economy

The term atom economy is one of the fundamental and most important principles of Green Chemistry. It measures the number of atoms of reactants in a product and eventually ending up in waste. Read more..

Atomic energy

Atomic energy

Atomic energy is a term used to describe the constitutive internal energy of the atom, which was absorbed when it was formed. Energy derived from the mass converted into energy in nuclear transformations. Read more.

Atomic mass unit

Atomic mass unit

Atomic mass unit is a term used to describe the mass of a neutral atom of a nuclide. It is usually expressed in terms of the physical scale of atomic masses, that is, in atomic mass units (amu). Read more.