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a short way of writing the name of a chemical compound. It shows the composition of the compound using the element symbols.
water droplets that combine with one another, grow too heavy to stay in the air, and fall to the...
an ion that has both a positive and a negative charge on the same group of atoms.
a bond formed when non-metal atoms share a pair of valence electrons to form a molecule.
a process that releases energy from the system. This decreases the internal energy of the system...