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the mass of a formula unit relative to one atomic mass unit.
a substance that does not allow heat or energy transfer.
an electron pair in which each atom provides one electron for the bonding pair.
a measure of the bond energy of a chemical bond. A large amount of energy is needed to break a...
attracted to iron, cobalt or nickel, or forms a permanent or temporary magnetic field.
water droplets that combine with one another, grow too heavy to stay in the air, and fall to the...