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a chemical reaction in which a transfer of electrons takes place from one substance (the reducing agent) to another (the oxidising agent).
the process by which nitrogen passes through the ecosystem.
a pair of electrons shared between two atoms in a covalent bond.
a group of organic compounds where an oxygen atom has replaced two hydrogen atoms on an end...
released energy - the energy released when new bonds are formed.
a solution to which a little base has been added to a lot of water.