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a bond formed when non-metal atoms share a pair of valence electrons to form a molecule.
(also called coordinate bond) one atom contributes both electrons (or a lone pair of electrons)...
a homogeneous mixture formed when a substance (solute) is dissolved in another substance (...
small electrical cells such as those in watches, pacemakers, hearing aids and calculators.
water droplets that combine with one another, grow too heavy to stay in the air, and fall to the...