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centre part of an atom with positive charge concentrated in a tiny kernel.
materials that exhibit strong magnetic effects; form magnets or are attracted to magnets
reactions that cause the surroundings to cool. Heat is taken in.
a material that has intermediate electrical conductivity that can be changed and controlled. It...
a table providing the standard potential values for half reactions. It is based upon the...
the overall change in energy in a reaction, represented by âH. The difference in enthalpy of...