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a substance that can act as both an acid and a base.
the part of the Earth's hydrosphere that is made of frozen water.
(also called dative covalent bond) one atom contributes both electrons (or a lone pair of...
the use of an electric current to cause chemical change in a liquid.
a very small, negatively charged particle that moves around the nucleus of an atom.
a material that has intermediate electrical conductivity that can be changed and controlled. It...