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the levels of energy in which electrons move and which have fixed amounts of energy.
a polymer used in manufacture of synthetic resins, fibres and plastics.
a method of determining the concentration of an acid or base by neutralising it with a base or...
a substance that does not allow heat or energy transfer.
a process that releases energy from the system. This decreases the internal energy of the system...
when an aqueous solution of potassium cyanide is added to the slurry of metallic gold and ore....