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the energy level, or shell, of an atom that contains the valence electrons.
in a chemical reaction no mass is gained or lost when substances react to form new products....
a method used to refine petrol by breaking covalent bonds between carbon atoms using heat and a...
the process during which nitrogen gas is converted into substances that can be used by plants,...
consist of two half cells where oxidation and reduction take place. Electrochemical cells are...
a natural dipole induces a non-polar molecule to become an induced dipole.