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a reaction in which more energy or heat is released than absorbed when the reaction takes place
a diagram that shows the electrons in the outermost occupied shell of an atom as dots or crosses...
no energy is gained or lost during a chemical reaction.
the elimination of a hydrogen halide, such as hydrogen bromide, from a halo-alkane.
the natural circulation of water on, above or below the surface of the Earth.
the ratio of the concentration of the products to the concentration of the reactants in a...